Two young lacrosse players battle for possession of the ball.
The people are playing lacrosse.
Two young lacrosse players are people, and possession of the ball implies playing.
exists s1 x1 x2 x3 x4 x5.(n_ball(x5) & a_topic(x1) & of(x1,x5) & for(x1,x4) & n_possession(x4) & n_battle(x1) & of(x1,x3) & n_player(x3) & of(x1,x2) & n_lacrosse(x2) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_lacrosse(x2))