Two basketball players contend for a rebound.
fouling each other going for rebound
The basketball players may not be fouling each other.
exists e1 x1 x2 x3 x4.(for(e1,x4) & n_rebound(x4) & Topic(e1,x3) & Actor(e1,x1) & v_contend(e1) & n_event(x3) & n_player(x1) & of(x1,x2) & n_basketball(x2) & card_eq_2(x1))
exists x1.(all x2.(n_other(x2) -> exists e1 e2 x3.(for(e1,e2) & for(e2,x3) & n_rebound(x3) & Actor(e2,x1) & v_go(e2) & Theme(e1,x2) & Actor(e1,x1) & v_foul(e1))) & n_thing(x1))