We also changed some POS tags for functional words like prepositions and words such as `be' and `have' to tags which denote their literal forms, because the choice of POS of a focus word is highly dependent on the word itself.
we obtained 513 POS tags including 16 POS tags for nouns, 17 for verbs, 410 for prepositions and phrasal prepositions, and 70 for adjectives and adverbs.