A man and a woman are talking while waiting at a crosswalk.
The man is wearing boots.
The man may be without boots.
exists e2 e1 x1 x2 x3 x4.(while(e1,e2) & at(e2,x4) & n_crosswalk(x4) & Actor(e2,x1) & v_wait(e2) & Actor(e1,x1) & v_talk(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_boot(x2))