A dog strolls, holding a Frisbee in its mouth.
These animals were playing.
If the dog is holding a frisbee in its mouth then he must be playing.
exists e2 e1 x1 x2 x3.(for(e1,e2) & in(e2,x3) & n_mouth(x3) & of(x3,x1) & n_thing(x1) & Theme(e2,x2) & Actor(e2,x1) & v_hold(e2) & n_frisbee(x2) & Actor(e1,x1) & v_stroll(e1) & n_dog(x1))
exists e1 x1.(n_animal(x1) & Actor(e1,x1) & v_play(e1))