The man at the street corner is selling poems.
The man is selling words.
Poems implies that there are words.
exists e1 x1 x2 x3 x4.(n_corner(x2) & of(x2,x3) & n_street(x3) & n_man(x1) & Theme(e1,x4) & Actor(e1,x1) & v_sell(e1) & n_poem(x4) & at(x1,x2))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_sell(e1) & n_word(x2))