A woman in a white shirt walks down a sidewalk.
A person is walking.
A woman is a person, and she is walking.
exists e1 s1 s2 x1 x2 x3.(a_down(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & n_sidewalk(x3) & in(x1,x2) & n_shirt(x2) & a_white(s1) & Theme(s1,x2) & n_woman(x1))
exists e1 x1.(Actor(e1,x1) & v_walk(e1) & n_person(x1))