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Penn Treebank Part-Of-Speech tags used in the NXT version of Switchboard (i.e. values of the attribute pos for word elements):
| Value |
Description |
| BES |
's form of BE |
| CC |
co-ordinating conjunction |
| CD |
cardinal number |
| DT |
determiner |
| EX |
existential there |
| IN |
preposition/subordinating conjunction |
| JJ |
adjective |
| JJR |
adjective, comparative |
| JJS |
adjective, superlative |
| MD |
modal |
| NN |
noun, singular or mass |
| NNP |
proper noun, singular |
| NNPS |
proper noun, plural |
| NNS |
noun, plural |
| PDT |
predeterminer |
| POS |
possessive ending |
| PRP |
personal pronoun |
| PRP$ |
possessive pronoun |
| RB |
adverb |
| RBR |
adverb, comparative |
| RP |
particle |
| TO |
infinitival to |
| UH |
interjection, filler, discourse marker |
| VB |
verb, base form |
| VBD |
verb, past tense |
| VBG |
verb, gerund/present participle |
| VBN |
verb, past participle |
| VBP |
verb, non-third person singular present |
| VBZ |
verb, third person singular present |
| WDT |
wh-determiner |
| WP |
wh-pronoun |
| WRB |
wh-adverb |
| XX |
partial word, POS unclear |
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