Two boys are playing in a sprinkler.
Two boys are taking a nap
The two boys are playing, not taking a nap.
exists e1 x1 x2.(in(e1,x2) & n_sprinkler(x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_nap(x2) & n_boy(x1) & card_eq_2(x1))