A woman walking down the sidewalk.
A girl is walking down to the corner store.
Not all woman is girl. Just because a woman is walking down the sidewalk does not mean she is walking down to the corner store.
exists e1 s1 x1 x2 x3.(n_sidewalk(x3) & a_topic(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_woman(x1))
exists e1 s1 x1 x2 x3.(n_store(x2) & of(x2,x3) & n_corner(x3) & to(e1,x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1) & n_girl(x1))