A dog is playing with its toy.
A dog has something to play with.
If the dog is playing with his toy, we know the dog has something to play with.
exists e1 x1 x2.(with(e1,x2) & n_toy(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_play(e1) & n_dog(x1))
exists e1 p1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & Topic(x2,p1) & exists e2 x3.(with(e2,x3) & n_thing(x3) & Actor(e2,x2) & v_play(e2)) & n_thing(x2) & n_dog(x1))