FOR D = W1, ..., HAI, WJ, ..., WK, H/AI, ..., WM,EXTRACT FEATURES A...

4. For d = w

1

, ..., hAi, w

j

, ..., w

k

, h/Ai, ..., w

m

,

extract features as x

(1)

,...,x

(m)

.

dm4–k,. . .,dm4+0,. . .,dm4+k: POS4 of k preced-

ing and following words of the word w

i

.