Modified Penn Treebank Tag-Set

from Infogistics' NLProcessor

Open class categories

POS Tag	Description	Example
JJ	adjective	green
JJR	adjective, comparative	greener
JJS	adjective, superlative	greenest
RB	adverb	however, usually, naturally, here, good
RBR	adverb, comparative	better
RBS	adverb, superlative	best
NN	common noun	table
NNS	noun plural	tables
NNP	proper noun	John
NNPS	plural proper noun	Vikings
VB	verb base form	take
VBD	verb past	took
VBG	gerund	taking
VBN	past participle	taken
VBP	verb, present, non-3d	take
VBZ	verb present, 3d person	takes
FW	foreign word	d'hoevre

Closed class categories

POS Tag	Description	Example
CD	cardinal number	1, third
CC	coordinating conjunction	and
DT	determiner	the
EX	existential there	thereis
IN	preposition	in, of, like
LS	list marker	1)
MD	modal	could, will
PDT	predeterminer	boththe boys
POS	possessive ending	friend's
PRP	personal pronoun	I, he, it
PRP$	possessive pronoun	my, his
RP	particle	giveup
TO	to (both "to go" and "to him")	togo,tohim
UH	interjection	uhhuhhuhh
WDT	wh-determiner	which
WP	wh-pronoun	who, what
WP$	possessive wh-pronoun	whose
WRB	wh-adverb	where, when