Two boys kick around a ball in a meadow.
Two kids are throwing a Frisbee.
Two boys kick a ball is not the same as throwing a frisbee.
exists e1 x1 x2 x3.(in(e1,x3) & n_meadow(x3) & around(e1,x2) & n_ball(x2) & Actor(e1,x1) & v_kick(e1) & n_boy(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_frisbee(x2) & n_kid(x1) & card_eq_2(x1))