A set of 12 universal POS tags described in
A Universal Part-of-Speech Tagset by Slav Petrov, Dipanjan Das and Ryan McDonald (2012) In Proceedings of the Eight International Conference on Language Resources and Evaluation (LREC'12)
(code and mappings available: here.
|ADJ||adjective||new, good, high, special, big, local|
|ADP||adposition||on, of, at, with, by, into, under|
|ADV||adverb||really, already, still, early, now|
|CONJ||conjunction||and, or, but, if, while, although|
|DET||determiner, article||the, a, some, most, every, no, which|
|NOUN||noun||year, home, costs, time, Africa|
|NUM||numeral||twenty-four, fourth, 1991, 14:24|
|PRT||particle||at, on, out, over per, that, up, with|
|PRON||pronoun||he, their, her, its, my, I, us|
|VERB||verb||is, say, told, given, playing, would|
|.||punctuation marks||. , ; !|
|X||other||ersatz, esprit, dunno, gr8, univeristy|
Table adapted from the NLTK book (Chapter 5).