a bird lands on a man's glove.
The falcon lands on the man's glove.
Not every bird is a falcon.
exists e1 x1 x2 x3.(on(e1,x3) & n_glove(x3) & of(x3,x2) & n_man(x2) & Actor(e1,x1) & v_land(e1) & n_bird(x1))
exists e1 x1 x2 x3.(n_glove(x3) & of(x3,x2) & n_man(x2) & n_falcon(x1) & on(e1,x3) & Actor(e1,x1) & v_land(e1))