A man in a gray cap fishing.
A man is fishing in a small boat.
Not all man in a gray cap fishing is fishing in a small boat.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & n_fishing(x2) & of(x2,x3) & n_cap(x3) & a_gray(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2.(in(e1,x2) & n_boat(x2) & a_small(s1) & Theme(s1,x2) & Actor(e1,x1) & v_fish(e1) & n_man(x1))