Penn Treebank
Penn Treebank¶
Tag |
Description |
|---|---|
ADJP |
Adjective Phrase. |
ADVP |
Adverb Phrase. |
CONJP |
Conjunction Phrase. |
FRAG |
Fragment. |
INTJ |
Interjection. Corresponds approximately to the part-of-speech tag UH. |
LST |
List marker. Includes surrounding punctuation. |
NAC |
Not a Constituent; used to show the scope of certain prenominal modifiers within an NP. |
NP |
Noun Phrase. |
NX |
- Used within certain complex NPs to mark the head of the NP. Corresponds very roughly to N-bar level but used quite differently. |
PP |
Prepositional Phrase. |
PRN |
Parenthetical |
PRT |
Particle. Category for words that should be tagged RP. |
QP |
Quantifier Phrase (i.e. complex measure/amount phrase); used within NP. |
ROOT |
No description |
RRC |
Reduced Relative Clause. |
S |
conjunction or a wh-word and that does not exhibit subject-verb inversion. |
SBAR |
Clause introduced by a (possibly empty) subordinating conjunction. |
SBARQ |
- Direct question introduced by a wh-word or a wh-phrase. Indirect questions and relative clauses should be bracketed as SBAR, not SBARQ. |
SINV |
- Inverted declarative sentence, i.e. one in which the subject follows the tensed verb or modal. |
SQ |
Inverted yes/no question, or main clause of a wh-question, following the wh-phrase in SBARQ. |
UCP |
Unlike Coordinated Phrase. |
VP |
Verb Phrase. |
WHADJP |
Wh-adjective Phrase. Adjectival phrase containing a wh-adverb, as in how hot. |
WHADVP |
- Wh-adverb Phrase. Introduces a clause with an NP gap. May be null (containing the 0 complementizer) or lexical, containing a wh-adverb such as how or why. |
WHNP |
- Wh-noun Phrase. Introduces a clause with an NP gap. May be null (containing the 0 complementizer) or lexical, containing some wh-word, e.g. who, which book, whose daughter, none of which, or how many leopards. |
WHPP |
- Wh-prepositional Phrase. Prepositional phrase containing a wh-noun phrase (such as of which or by whose authority) that either introduces a PP gap or is contained by a WHNP. |
X |
- Unknown, uncertain, or unbracketable. X is often used for bracketing typos and in bracketing the…the-constructions. |