A cat is watching the movement of a young girl who is playing with a toy airplane.
Nothing is watching
Either a cat is watching or nothing is watching.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(n_movement(x2) & Theme(e2,x2) & Actor(e2,x1) & v_watch(e2) & of(x2,x3) & with(e1,x5) & n_airplane(x5) & of(x5,x6) & n_toy(x6) & Actor(e1,x4) & v_play(e1) & (x3 = x4) & n_girl(x3) & a_young(s1) & Theme(s1,x3) & n_cat(x1))
-exists e1 x1.(Actor(e1,x1) & v_watch(e1) & n_thing(x1))