A man is sitting on a stool fishing.
a man sitting while fishing
The man is sitting and fishing.
exists e1 x1 x2 x3.(on(e1,x2) & n_fishing(x2) & of(x2,x3) & n_stool(x3) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 x1 x2 x3.(a_topic(x1) & while(e1,x3) & n_fishing(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))