A young child dances on a straw surface.
The old man is sleeping on the hay.
A young child is not an old man.
exists e1 s1 x1 x2 x3.(on(e1,x2) & n_surface(x2) & of(x2,x3) & n_straw(x3) & Actor(e1,x1) & v_dance(e1) & n_child(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_hay(x2) & n_man(x1) & a_old(s1) & Theme(s1,x1) & on(e1,x2) & Actor(e1,x1) & v_sleep(e1))