Two boys kick around a ball in a meadow.
Two brothers are playing a game of soccer.
Kicking a ball does not necessarily imply playing a game of soccer.  Boys are not assumed to be brothers.
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 x3.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & of(x2,x3) & n_soccer(x3) & n_game(x2) & n_brother(x1) & card_eq_2(x1))