ExtPos: external POS
This feature indicates the effective UPOS of an expression when it differs from the UPOS of the head word.
In English, only heads of a fixed relation
and a small number of multiword proper names employ the feature, though in the future it may be broadened.
ExtPos is also used in the SUD framework.
ADP: adposition-like expression
Examples
- figures such as the Pope (such =
ADJ) - I want a cat instead of a dog (instead =
ADV) - according to the Pope (according =
VERB)
ADV: adverb-like expression
Examples
- I like dogs, of course (of =
ADP)
CCONJ: coordinating conjunction-like expression
Examples
- I like dogs as well as cats (first as =
ADV) - I don’t want a cat let alone a dog (let =
VERB)
PRON: pronoun-like expression
Examples
- one another (one =
NUM)- By contrast, each other is analyzed with a
detrelation, notfixed, soExtPosis not used there.
- By contrast, each other is analyzed with a
PROPN: proper name expression
This is applied to multiword proper names analyzed internally as something other than a nominal, e.g. as a verb phrase or clause.
Examples
I saw Some/DET Like/VERB[ExtPos=PROPN] It/PRON Hot/ADJ
obj(saw, Like)
nsubj(Like, Some)
obj(Like, It)
xcomp(Like, Hot)
Note: Proper name tagging conventions inherited from PTB might suggest that Like be tagged as PROPN
along with all name-internal content words. For names with non-nominal structure, we make an exception
and instead follow the UD universal recommendation that PROPN be restricted to true nouns, applying the
morphosyntactically accurate tags (VERB, etc.) coupled with ExtPos=PROPN on the head.
This avoids apparent anomalies like non-copular PROPNs with subjects.
SCONJ: subordinator-like expression
Examples
- pastimes such as eating cake (such =
ADJ) - I brought an umbrella in case it rains (in =
ADP) - Let’s walk instead of taking the bus (instead =
ADV)
ExtPos in other languages: [bej] [de] [en] [fr] [ha] [ht] [pcm] [pt] [u]