Guidelines for Dependency Annotation
We will be annotating our corpus for Universal Dependency Relations (version 2)
If you have questions during annotation, please follow this procedure:
- Check this page
- Check the Dependency Guidelines
- Check the ESL Guidelines
- Search dependency-annotated corpora with TüNDRA (note that searches are case-sensitive):
- Learn how to search here
- Search the written ESL corpus
- Search the English Web Treebank (EWT)
Introduction to Dependency Relations
Dependency relations capture functional grammatical relationships between words in an utterance. Each linguistic item in an utterance has one (and only one) syntactic head, but may have multiple (or no) dependents. For example, in the sentence The hungry person ate the pizza
, the word person
has one syntactic head ate
. person
is connected to head
via a nominal subject nsubj
relationship. person
also has two syntactic dependents: hungry
(via an adjective modifier relationship amod
) and The
(via a determiner relationship det
).
UD Annotation Scheme
Here, each dependency relation is described and examples of each are also given.
Universal Dependencies | Descrption | Example | Notes |
---|---|---|---|
acl | clausal modifier of noun | First of all , I was really furious of watching a show_head starring_acl by a different actor , instead of Danny Brook . | The main verb in the modifying clause will take the “acl” annotation |
acl:relcl | relative clause modifier | There is something_head I like_acl:relcl to know from you . | The main verb in the relative clause will take the “acl:relcl” annotation |
advcl | adverbial clause modifier | I ask_head you for returning_advcl my money back . | The main verb in the adverbial clause will take the “acl:relcl” annotation |
advmod | adverbial modifier | For instance a lot of children nowadays_advmod replace_head their real life with the virtual world , which computers create . | |
amod | adjectival modifier | It was about fourty five minutes later than original_amod starting_amod time_head | There are 2 dependencies in this example |
appos | appositional modifier | It was Katha_head , a girl_appos who had the same problems like Pat . | |
aux | auxiliary | You have_aux also written_head in your advertisement that it would_aux started_head at half past seven but it started at 20:15 ! | There are 2 dependencies in this example |
aux:pass | passive auxiliary | If he had told everybody, J would have been_aux:pass blamed_head by whole school . | |
case | case marking | If she was not followed by_case journalists_head , she would n’t die . | |
cc | coordinating conjunction | And_cc the reason I choose painting is_head it ‘s being very exciting to me , | |
cc:preconj | preconjunct | In conclusion , there are both_cc:preconj advantages_head and disadvantages of covering celebrities . | |
ccomp | clausal complement | You ca n’t imagine_head how funny_ccomp it was ! | |
compound | compound | would you check the weather_compound forecast_head for me , please ? | |
compound:prt | phrasal verb particle | They make their life style much easy more fast because they need to catch_head up_compound:prt with the other people . | |
conj | conjunct | I have knowladge about navigation_head , engine_conj , ropes_conj and knots_conj and sails_conj as well . | There are 4 dependencies in this example |
cop | copula | Unfortunatly , Pat was_cop n’t very good_head at keeping secrets . | |
csubj | clausal subject | I really think that living_csubj will be_head like living in the moon , very exciting . | |
csubj:pass | clausal passive subject | In the advertisement , it was told_head that Danny Brook was starring_csubj:pass , but in place of him there was a different actor and he was really dissapointing . | |
dep | unspecified dependency | MOON LANDING HOAX_head : CHURCH = TECHNOLOGY_dep & GOVERNMENT - Shuttle Carried on Aircraft model | Example from EWT corpus, limited examples |
det | determiner | I would rather be accommodated in a tent because I already have the_det necessary material_head for camping . | |
det:predet | predeterminer | But sometimes I have to forget my opinion and spent all_predet the day_head looking for my mother in a huge department-store. | |
discourse | discourse element | I would like_head to travel on July , please_discourse , because that when I am in vacation . | |
dislocated | dislocated elements | steel_dislocated or iron , which use for our building , it_head can make it stronger and easy to destroy . | Limited examples in corpra |
expl | expletive | In these gallaries there_expl are_head Historical paintings , antique furnitures which Chiang used . | |
fixed | fixed multiword expression | Then , we should film the English class so_head as_fixed to_fixed show who makes the film . | There are 2 dependencies in this example |
flat | flat multiword expression | After concert I left with Ricky_head Martin_flat . | |
flat:foreign | foreign words | Lopez ‘s 1561 book “Libro_head de_flat:foreign la_flat:foreign invencion_flat:foreign liberal_flat:foreign y_flat:foreign arte_flat:foreign del_flat:foreign Juego_flat:foreign del_flat:foreign Acedraz_flat:foreign “ became THE classic on Chess openings , including the one that bears his name . | Example from EWT corpus, only example in corpus, there are 10 dependencies in this example |
goeswith | goes with | All my class_head mates_goeswith are looking forward to go to London . | |
iobj | indirect object | I would like to explain_head you_iobj my experience because I want you to give my money back . | |
list | list | How many jeans_head , Pants_list , sweater_list ect._list do I have to take ? | There are 3 dependencies in this example |
mark | marker | This is the fact that_mark shopping is not enjoyable_head . | |
nmod | nominal modifier | How is the home_head of the future_nmod will be ? | |
nmod:npmod | noun phrase as adverbial modifier of noun | Yes she is having physical therapy 3 times_head a week_nmod:npmod . | Example from EWT corpus |
nmod:poss | possessive nominal modifier | I will go to your_nmod:poss office_head this week . | |
nmod:tmod | temporal modifier | Her husband became a citizen_head of the US just the week_nmod:tmod before last . | Example from EWT corpus |
nsubj | nominal subject | I_nsubj will go_head to your office this week . | |
nsubj:pass | passive nominal subject | We will not use black clothes as we_nsubj:pass are used_head to do . | |
nummod | numeric modifier | I usually spend my time on playing computer about three_nummod hours_head a day . | |
obj | object | Even we could make_head a trip_obj to Paris in the school holiday ! | |
obl | oblique nominal | Thank_head you very much for you time_obl . | |
obl:npmod | noun phrase as adverbial modifier | They are a bit_obl:npmod far_head from town but they have huge car park . | |
obl:tmod | temporal modifier | I ‘m so happy with the experience I lived_head last month_obl:tmod . | |
orphan | orphan | So in the last century our daily life changed dramandesly and we became lazy and our life_head unpersonal_orphan , fast and unromantic . | Only example in ESL corpus |
parataxis | parataxis | They would be sinthetic clothes_head , I think_parataxis made of plastic or something similar . “ | |
punct | punctuation | The scene of Toyko is not beautiful_head ,punct but you think that this city is a developing place .punct | There are 2 dependencies in this example |
reparandum | overridden disfluency | It was just unbelievably dissapointing because the reason_head I mean_reparandum main reason which made me to go was to see Danny Brook . | Limited examples in corpra |
root | root | I could n’t believe_root it but he gave me the contract ot fill it out . | The root is the head of itself; tag in webanno by first holding shift, and then dragging an arrow from the root tag to itself. |
vocative | vocative | Now Kim_vocative , I will finish_head my letter but I promise you to write again as soon as possible , maybe if I ‘ve developed the photos of the concert and the stars and the …. | Limited examples in corpra |
xcomp | open clausal complement | Further because I like_head to live_xcomp in contact with the nature . |
Clarifications and special cases (tags)
acl
The UD guidelines define acl
as finite or non-finite clauses that modify a nominal. The noun that the clause modifies is the head of the acl
relation.
The dependent as a VBG:
-
There are many online sites_NNS_head offering_VBG_acl booking facilities
-
The right to know everything_NN_head happening_VBG_acl in the world
The dependent as a VBN:
I went to your show_NN_head called_VBN_acl “ Over the Rainbow”
The dependent as a VB in an infinitival clause:
I had the chance_NN_head to spend_VB_acl time in London
Relative clauses are also instances of acl
, though they are tagged with acl:relcl
.
I saw the man_NN_head you love_VBP_acl:relcl
acl
or xcomp
The distinction between acl
and xcomp
is sometimes difficult to make. Both dependency relationships can contain infinitive clauses. To distinguish between the two, determine whether the head of the clause is a verb, adjective or a nominal.
If the clause is modifying a verb or adjective then it is typically xcomp
-
I started_VBD_head to work_VB_xcomp there yesterday
-
We should try_VB_head to understand_VB_xcomp technology
-
Everyone is welcome_JJ_head to join_VB_xcomp our study group
-
We are very happy_JJ_head to help_VB_xcomp you in any way
If the clause is modifying a nominal (that is, if the head of the clause is a noun phrase) then it is acl
.
Adjectives at the beginning of utterances
There are quite a few sentences in the data that begin with an adjective or an adjectival phrase. We will approach tagging these occurrences differently, depending on the type of utterance and construction it is.
When the adjective is part of an unambiguously implied copular construction, it can be tagged as the root of the sentence…
<fine , thank you > should be tagged as:
fine_JJ_root , thank_VBP_parataxis you
This can also be the case in situations where there is explicit subordination attached to the initial adjective phrase:
< very busy because I attend big project now >
Very busy_JJ_root because I attend_advcl big project now
When there is no explicit subordination, nor an unambiguously implied copular construction, the initial adjective is likely a discourse
marker. This will often be the case when the adjective can be substituted for other discourse markers like ‘OK’ or ‘yeah’ and gives no clear implication of a copular construction.
<fine , I will do it > will be tagged as:
fine_JJ_discourse , I will do_VB_root it
If there are ambiguous or confusing examples of initial adjectival utterances, be sure to bring them up in the discord/meetings so we can continue to update this heuristic.
ccomp
Clausal complements ccomp
are given when a clause has an overt subject OR the implied subject can be interpreted as something other than the subject of the head clause (see ccomp
or xcomp
).
In most sentences, a ccomp
dependent has an overt subject and is a VB
or JJ
which has a head that is a type of VB
or JJ
.
I hope_VBP_head you consider_VBP_ccomp these pieces of suggestions .
ccomp
can sometimes be a NN
when it is the head of a cop
dependent.
We thought it would be_VB_cop a joke_NN_head , but it was n’t .
We thought_VBD_head it would be a joke_NN_ccomp , but it was n’t .
ccomp
or xcomp
External complements (xcomp
) are given when a clause has no overt subject AND the implied subject is the same as the head clause. This is most common with infinitive clauses.
We try_head to play_xcomp
(ESL search: [edge = “xcomp”], implied subject can only beWe
)We started_head digging_xcomp
(from guidelines; implied subject ofdigging
can only beWe
)
Clausal complements (ccomp
) are given when a clause has an overt subject OR the implied subject can be interpreted as something other than the subject of the head clause.
I hope_head you consider_ccomp these pieces of suggestions
(ESL search: [edge = “ccomp”])The boss said_head to start_ccomp digging
(from guidelines; implied subject is possibly/likelyyou
notboss
, so it can’t bexcomp
)I say_head to him do n't bring_ccomp heavy things
(from Spoken corpus, implied subject isyou
, which is different from the subject of the head clause,I
)
csubj
csubj
is used when the subject of a clause is itself a clause. The root of the subject clause (not the root of the sentence) is the csubj
dependent.
csubj
is often the main verb of the subject clause.
To teach_csubj pupils is not easy_head , of course .
csubj
is often not a verb when there is a copular verb in the subject clause.
It takes_head some time and practice to be able_csubj to focus on the one thought .
discourse
or parataxis
Utterances such as you know
and I mean
can be a bit confusing to tag. Although they might seem like like discourse markers, the guidelines for the discourse
tag explicitly indicate that instances such as you know
are not counted as discourse markers. Even in cases where these (and related utterances) appear to be functioning as discourse markers, they should be tagged as instances of parataxis
.
I mean_parataxis , at the time I was 28_head
(EWT search:[word = "mean" & (edge = "parataxis" | edge = "discourse")] > [word = "I"]
)you know_parataxis, nature hates_head a void
(EWT search:[word = "know" & (edge = "parataxis" | edge = "discourse")] > [word = "you"]
)
expl
expl
is used for the existential “there”.
There_expl¹ are_head¹ a lot of folk stories in the world and there_expl² are_head² a lot of folk stories in Estonia ,
“it” is marked as expl
when it is used in extraposition constructions.
It_expl was not perfect evening_head for me and my child at all !
As far as I ‘m concerned, I firmly believe that , it_expl ‘s worth_head to pointing out the following :
`
flat:foreign
flat:foreign
is only used when there is a sequence of foreign words. The first foreign word is the head of the flat:foreign dependents.
I should have asked then but i did n’t the only line i remember is de_head lunde_flat:foreign bar_flat:foreign .. or something like that .. does anybody know which song i am talking about ?
fixed
vs flat
vs compound
vs compound:prt
fixed
is used for multiword expressions which behave like function words or short adverbials.
Of_head course_fixed , I became aware of her feelings since a friend of mine overheard a conversation between Pat and other girl .
flat
is used for multiword expressions such as names and titles which do not use regular syntactic relations (otherwise see compound
). The first word in the multiword expression is the head of the flat dependencies.
The telephone was invented by Alexander_head Graham_flat Bell_flat in the end of the 19th century .
Flat
dependencies are used when a multiword expression is grammaticalized to the extent that there is no clear internal structure or evidence that one of the words is the syntactic head. The first word in the multiword expression is the head of the flat dependencies.New_head York_flat
compound
is generally used for multiword expressions of nouns. This does not include mistakenly separated words (see goeswith
).
But the most important innovation of technology_compound development_head is the computer .
If a multiword expression is headed, it must be a compound dependency to preserve the syntactic hierarchy of the head.Apple_compound pie_head
However, if a headed mutliword expression is grammaticalized to the extent that there is no clear internal structure or evidence that one of the words is the syntactic head, the flat dependency is used (seecompound
)
Proper nouns which use regular syntactic relations are tagged as compound
(otherwise see flat
).
This building is situated on the magnificent embankment of Niva_compound¹ River_head¹ with an excellent view on the Hermitage_compound² Museum_head² .
Multiword expressions of numbers also take the compound
dependency.
The performance started fourty_compound five_head minutes later .
compound
can sometimes be a JJ
.
Their selection is top_compound notch_head and the staff is very knowledgeable .
my experience with them was great - low_compound stress_head , very helpful and very personal .
The particle of an idiomatic phrasal verb is marked as a compound:prt
dependent. The head of the compound:prt
dependent is the verb element of the phrasal verb.
I could n’t believe it but he gave me the contract to fill_head it out_compound:prt .
goeswith
goeswith
is a tag that allows annotators to correct transcription errors.
Use goeswith
to mark orthography that should be combined, but was seperated during transcription. The first part is always the head, and all other parts are goeswith
dependents of this head.
Were the people happier in a past than to_head day_goeswith ?
goeswith
is used for abbreviations that form into 1 word.
And the movie starts from one P_head¹ M_goeswith¹ to three P_head² M._goeswith² And three people , two boys and girls buy three coke and , maybe , two popcorns .
I 'm work in C_head A_goeswith my job is technical support .
When abbreviations form two words, the compound
tag is used instead.
there is one guy who is drinking and who is listening to the C_compound D_head .
nmod
“An nmod relation is used for nominal dependents of another noun or noun phrase”. nmod
relationships are typically realized via prepositional phrases, wherein a prepositional phrase is modifying a noun phrase.
our way_NN_head of life_NN_nmod
the boys_NNS_head in blue_JJ_nmod
Note that an nmod
token can be a nominal itself (as is typical) as well as an attributive adjective (see ‘blue’ in the example above).
PRP
is sometimes nmod
because it can function as the nominal dependent of another noun or noun phrase.
He has a bestfriend , that was more like a brother_NN_head for him_PRP_nmod.
nsubj
nsubj
is used to mark the subject or agent of a clause. This most frequently occurs before a conjugated verb.
On the other hand , it_nsubj looks_head pretty cool .
When the subject or agent refers to a copular verb (cop
), the head of the nsubj
dependent is the same as the head of the cop
.
Google_nsubj is_cop a nice search engine_head .
Is_cop that_nsubj a money maker_head ?
When “is” or “are” are the head of a preceding expl
dependent, “is” or “are” are also the head of a following nominal nsubj
dependent.
there_expl¹ are_head¹⁺² only ten computers_nsubj² in the school ,
obl
In most sentences, an obl
dependent is an NNP
, NN
, or PRP
which has a head that is a VB*
, JJ
, or RB
.
Modern technology plays_VBZ_head an important role in our life_NN_obl .
An obl
dependent can also be IN
. Common IN
words which can be obl
dependents include: “with”, “for”, “like”, “from”, “about”, “into”, and “of”.
After having visited shops during 10 hours and tried at least 2,000 shoes , I finally found what I was looking_VBG_head for_IN_obl .
The hotel your group has been booked_VBN_head into_IN_obl is called Palace Hotel .
“Which” and “that” can be obl
dependents even though they are WDT
.
Here are the information which_WDT_obl you asked_VBN_head me for .
In addition to this , it was not the famous actors that_WDT_obl you have mentionned_VBN_head in the advertisement , so we were disappointed .
An obl
dependent can also be JJ
. This occurs in a variety of contexts.
- A dependent
JJ
is preceded by aIN
.'Adobe Acrobat Reader 4.0 may be downloaded_VBN_head for_IN FREE_JJ_obl from www.adobe.com
`
- The word “own” when it is preceded by a
PRP$
.The longer and further they live_VBP_head on their_PRP$ own_JJ_obl , the more they may feel that they need a family .
- The word “other” when preceded by the word “each”.
Students are talking_VBG_head to each_DT other_JJ_obl when they are having break .
An obl
dependent can also be DET
when it is preceded by a IN
or TO
. This occurs with the words “this”, “that”, “all”, and “another”.
First_RB_head of_IN all_DET_obl , the advertisement of the show said that Danny Brook was going to be on stage .
Further I would prefer to live in a tent at the Camp , because I am already used_JJ_head to_TO that_DET_obl , because I often spent my holidays in tents .
obl
or nmod
Making the distinction between whether a token takes an oblique (obl) or nominal modifier (nmod) dependency comes down to constituency. This distinction often is required when examining prepositional phrases. To make this distinction, one needs to determine the head of the prepositional phrase by asking the question: what is the prepositional phrase modifying? If the PP is modifying a noun phrase, or argument that is functioning as a noun phrase (see ‘another_DET’ below), the head of the PP is likely an nmod. Note that these cases of nmod often immediately follow the noun phrase they’re modifying.
another_DET_head of your questions_NNS_nmod
If the PP in question modifies a verb, adjective, or adverb it will likely be tagged as obl. Oblique phrases can also immediately follow a noun phrase, so the position/location of the phrase in the sentence isn’t a foolproof heuristic. That is, you can’t determine the dependency of the phrase just by its relative position.
obl:npmod
This relation is used when a noun phrase is used as an adverbial modifier. This relation is often realized in: (i) measure phrases:
-
The board is six feet_NN_obl:npmod long_JJ_head
(ii) noun phrases acting adverbially, modifying noun phrases or adjectives: -
it was a little bit_NN_obl:npmod hard_JJ_head to understand
-
`I can only sing_VB_head a little bit_NN_obl:npmod
-
The actual vote was a little_obl:npmod confusing_head
(iii) In the constructions “years old” and “years ago”:
I am 17 years_obl:npmod old_JJ_head .
That was 4 years_obl:npmod ago_RB_head .
(iv) to mark time by describing the frequency of a recurring event or state:
It ‘s twice my size and eats a rabbit once_head a month_obl:npmod .
I am hiring them to come twice_head a week_obl:npmod
Or will the nearly year_obl:npmod - round_head snow be too much for those who have never experienced snow in their lives ?
See obl:npmod
vs. obl:tmod
vs nmod:tmod
obl:npmod
vs. nmod:npmod
In the uncommon situation where obl:npmod
is used to describe the
frequency of a recurring event or state, and both the head and the
dependent of the obl:npmod
relationship are nouns, then the
nmod:npmod
tag is used instead.
Yes she is having physical therapy 3 times_NN_head a week_NN_nmod:npmod .
obl:npmod
vs. obl:tmod
vs nmod:tmod
obl:tmod
and nmod:tmod
dependencies are nominal obl
and nmod
dependencies which specify time.
The obl:tmod
dependency marks nominal indicators of time of which are headed by a VB*
, JJ
, or RB
.
what are you doing_VBG_head tonight_NN_obl:tmod .
The nmod:tmod
dependency is used when a nominal indicator of time is headed by another nominal construction.
Are you free for lunch some day_NN_head this week_NN_nmod:tmod ?
See nmod
or obl
for more.
When a temporal word is not headed by a nominal construction (and is therefore a type of obl rather than an nmod:tmod) it is most often an obl:tmod
dependent, with 2 exceptions where it is instead an obl:npmod
dependent. (Note that the corpora are inconsistent in this distinction).
Use obl:npmod
instead of obl:tmod
:
1) In the constructions “years old” and “years ago”.
I am 17 years_obl:npmod old_JJ_head .
That was 4 years_obl:npmod ago_RB_head .
2) To describe the frequency of a recurring event or state.
It ‘s twice my size and eats a rabbit once_head a month_obl:npmod .
I am hiring them to come twice_head a week_obl:npmod
Or will the nearly year_obl:npmod - round_head snow be too much for those who have never experienced snow in their lives ?
parataxis
Parataxis is used in discourse-feeling constructions such as “you know” or “I mean” when they interrupt a clause.
But after I got home , I thought_head , you know_parataxis , this is not the exact thing I was looking for .
If these discourse-feeling constructions introduce a clause, then it is a higher syntactic unit (such as root
or a conj
dependent headed by the root) which heads a ccomp
dependent.
I have just been in tent and I think_head it is always a beautiful and interested adventure_ccomp .
Parataxis is used for “a pair of what could have been standalone sentences, but which are being treated together as a single sentence” (UD Guidelines). In this case, the first sentence is the head of the following sentences, which are tagged as parataxis
dependents.
I 'm work_head in C A my job is technical support_parataxis'
When a parataxis
dependent breaks syntactic structure by occurring in-between two elements that should be adjacent, the parataxis
dependent is headed by the same syntactic unit it interrupts.
In this case, the obl
dependent is interrupted by a parataxis
dependent (by separating the case
dependent from its head), so the parataxis
dependent is also headed by the head of the obl
dependent (the word
Just go to beach and sit aside_case¹ you know , the_det² street_head¹⁺² and see the ocean .
Just go to beach and sit_head¹⁺² aside you know_parataxis¹ , the street_obl² and see the ocean .
punct
Punctuation is, unfortunately, a slightly tedious element of dependency annotation. Different projects have adhered to different guidelines and processes for annotating punctuation. This means that the corpuses are tagged rather inconsistently when it comes to punctuation, meaning that they likely shouldn’t be used as a guide. Therefore, this section, which is based on the UD version 2, will act as our guide for tagging punctuation.
1) Sentence level punctuation (periods, question marks, exclamation marks etc.)
Sentence level punctuation is attached to the root of the sentence.
-
Go_root home !_punct
-
The clown was exhausted_root(head¹), because he was juggling three pins ._punct¹
2) Clause & phrase level punctuation (commas, quotations, parentheses, occasionally hyphens etc. )
Below are four rules, extrapolated from the UD guidelines page, that are intended to be clear and directional.
(i) Punctuation preceding or following a dependent clause or phrase is attached to the head of that clause (subordinate clauses like relative clauses, adverbial clauses, parataxis, obl, npmods etc.).
-
The woman ,_punct who finished_head the race first ,_punct began to drink water .
-
Because some kid threw_head a rock at it ,_punct the window shattered .
-
The other day_head ,_punct I completed the residency application .
When there are sequential dependent clauses/phrases (at the same syntactic level), then the following clause takes precedence over the comma separating the two clauses:
but ,_punct¹ you know_head¹ ,_punct² you know_head² ,_punct² I went to school .
The other day ,_punct¹ in the DMV_head¹ ,_punct¹ I completed the residency application.
(ii) Punctuation separating coordinated units attaches to the following conjunct, in accordance with rule (i).
I know you must be going nuts with all the events ,_punct so I have not called_head .
- `I love eating out ,_punct but ,_punct I hate_head spending money .
Food like the stuff they eat in Spanish countries like tacos ,_punct¹ beans_head¹ ,_punct² rice_head² ,_punct³ pork_head³ ,_punct⁴ steak_head⁴ ,_punct⁵ ect_head⁵ .
(iii) Within the relevant clause or phrase, punctuation is attached to the highest syntactic unit (the head) of that clause or phrase.
(iv) Paired punctuation (quotation, parentheses) is attached to the same unit.
- `My favorite film is “_punct The Shining_head ”_punct
- She told me “_punct You did_head a wonderful job yesterday! ”_punct
3) Word level punctuation (word connecting hyphens )
Hyphens, or dashes, connecting two or more words are attached to the higher level (dominant) unit. The dominant unit in these cases is the word following the hyphen.
-
` What do you think of Google’s search -_punct engine_head`
-
Soon it will contain a full -_punct fledged_head operating system
-
When you have a chance, can you send me an e -_punct mail_head ?
punct
special cases
,
commas around cc, discourse, and advmods
Discourse, ccs, and advmods only govern punctuation at last resort. Rather, the punctuation that often appears either preceding or proceeding these tags is a dependent of the same unit that governs the cc, discourse, or advmod tag.
I love eating out ,_punct but ,_punct I hate_head spending money .
fine_discourse ,_punct I’ll do_head it .
I will ,_punct of course ,_punct drive_head you to the airport tomorrow!
,
commas around appos and dislocated dependents.
Appos and dislocated dependents can both govern punctuation. In the first example below, the appos dependent also heads a flat dependent.
our company 's president ,_punct¹ mister_appos_head¹⁺² Hokkaido_flat² held the home party .
Yeah , generally ,_punct¹ my upper manager_dislocated_head¹⁺² ,_punct² often they went to the overseas , so , before I went to the Germany
` : `
Colons are treated slightly differently than other clause-level punctuation. Colons are governed by the higher level clause, NOT the dependent clause.
-
AKA may refer_head to :_punct “Also known as” .
-
There is only one thing_head¹ to wear on your feet in summer :_punct¹ comfy sandals .
reparandum
A reparandum
dependent is a disfluency which is overridden by a repair. The repair is the head of the reparandum
dependent.
Overridden disfluencies occur when correcting an utterance:
He was the person , he and his wife Jan , introduced_reparandum -- reintroduced_head me and Laura in his backyard in July of 1977 .
or repeating an utterance:
put the heater on the snake he will love it and the_reparandum the_head next day you will have dinner
xcomp
External complements xcomp
are given when a clause has no overt subject AND the implied subject is the same as the head clause (see ccomp
or xcomp
).
In most sentences, an xcomp
dependent has an implied subject and is a VB
or JJ
which has a head that is a type of VB
or JJ
.
VB
is often xcomp
when firstly preceded by an infinite TO
, which is preceded by a type of head VB
.
I really enjoyed_VBD_head to_TO serve_VB_xcomp the drinks to the pop-stars .
VBG
is often an xcomp
when the subject is implied from the head (which is a type of VB
).
Also, I prefer_VBP_head sleeping_VBG_xcomp in a tent than in a long cabin because it is easier to clean .
JJ
can be an xcomp
when it modifies the action of the head. This only happens when the head is a type of VB
. This can happen in imperative contexts.
I am writing you because I felt_VBD_head dissapointed_JJ_xcomp after seeing the musical show “ Over the Rainbow “ .
Notice that xcomp
can happen in imperative contexts as both a JJ
and/or a type of VB
.
Let_VB_head me make_VB_xcomp it clear , you blew my time and money .
Let me make_VB_head it clear_JJ_xcomp , you blew my time and money .
Clarifications and special cases (particular words)
Copular be
In most sentences, the main verb of the first independent clause in a sentence is the “Root” of the sentence. In the example The hungry person ate the pizza
, the syntactic head of ate
is the “root” of the sentence (which isn’t represented aside from the root
tag.)
In constructions with copular be (e.g., She is a professor.
), however, the root
is the predicate (in this case, the nominal complement professor
). The word professor
has three dependents She
via an nsubj
relationship, is
via a cop
relationship, and a
via a det
relationship.
In copular constructions with clausal predicates, however, as in The important thing is to keep calm
, the “normal” conventions are used (is
is the root
)
elipses
Sometimes ellipses represent words lost during transcription, and their dependency relationship can be inferred based on context.
Shinjuku is movie theater_head in ...._obl
When the dependency relationship of ellipses cannot be inferred based on context, they are tagged as a punct
dependent.
So ..._punct sorekara saw_head the monkey .
so
The word so
will most often be in an advmod
relationship:
- when its head is an adjective as in
so_RB <--advmod-- glad_JJ
- when it could be substituted for
therefore
as inI am keen on photography, so_RB I would love_VB to...
- when it occurs at the beginning of a sentence as in
So, my son_RB loves_VBZ yakiniku because he is young
(sidenote: we may need to re-tag the POS for so in these cases)
said
and think
The dependency tag obj
is used when the verb said
or think
modifies a non-clausal construction.
And they said_head , " yes_obj " .
, I think_head cat_obj .
The dependency tag ccomp
is used when the verb said
or think
modifies a clausal construction.
He said_head , they are looking_ccomp for people .
I think_head it 's a math class_ccomp .'
Note: In more discourse contexts, think
is often tagged as parataxis
. See (parataxis
).
Clarifications and special cases (multi-word)
one day last week
This utterance can be both common and difficult to tag.
day
should head the nummod
dependent one
, the nmod:tmod
dependent week
, and often any punctuation which seperates the phrase from the root.
One_nummod¹ day_head¹⁺²⁺³ last week_nmod:tmod² ,_punct³ the lady went to the store .
day
is most often an obl:tmod
dependent headed by a verb.
One day_obl:tmod last week , the lady went_head to the store .
Sentences with only discourse
If a sentence contains only discourse, and the discourse elements are all at the same syntactic level, the root is the first discourse element in the sentence. The root is the head of the remaining discourse dependents.
No_root , no , no , no , no .
take care …
When the construction take care
precedes a nominal, it should be tagged as follows.
1) care
is an obj
dependent of the verb take
.
They help me take_head care_obj of the cat .
2) The nominal is an nmod
dependent headed by care
.
They help me take care_head of the cat_nmod .
Note: Pronouns are also nominals.
And I had to take care_head of her_nmod .
3) The nominal tends to head words between the nominal and the noun care
.
They help me take care of_case¹ the_det² cat_head¹⁺² .
Words with TO
and IN
POS special cases
When words with the POS TO
or IN
occur before punctuation, or at the end of a sentence, if they have no other option than to be headed by a preceding verb, they are generally tagged as obl
dependents of that verb.
But after I got home , I thought , you know , this is not the exact thing I was looking_head for_obl .
I ski because I like_head to_obl .
If one of these words is unambiguously an infinitival to
, then it is instead tagged as an xcomp
dependent.
Actually , I have_head to_xcomp .