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This page still pertains to UD version 1.

Note: Since the description of language-specific relations depends both on the universal guidelines and on the empirical facts of specific treebanks, it may not be fully updated to v2 until the first treebank release in March 2017.

Language-Specific Relations

In addition to the universal dependency taxonomy, it is desirable to recognize grammatical relations that are particular to one language or a small group of related languages. Such language-specific relations are necessary to accurately capture the genius of a particular language but will not involve concepts that generalize broadly. These language-specific relations should always be regarded as a subtype of an existing UD relation.

Labels of language-specific relations explictly encode the core UD relation that the language-specific relation is a subtype of, following the format universal:extension.

acl

advcl

advmod

amod

aux

auxpass

case

cc

ccomp

compound

conj

csubj

det

discourse

dobj

expl

mark

name

nmod

nsubj

nummod

parataxis

xcomp