A lacrosse game features two players in blue and orange playing for a goal.
A lacrosse game between two rivals in blue and orange.
You can not infer that the teams are rivals from the first sentence.
exists e1 s1 s2 x1 x2 x3 x4 x5.(Theme(e1,x3) & Actor(e1,x1) & v_feature(e1) & in(x3,x4) & for(x4,x5) & n_goal(x5) & n_playing(x4) & a_orange(s2) & Theme(s2,x4) & a_blue(s1) & Theme(s1,x4) & n_player(x3) & card_eq_2(x3) & n_game(x1) & of(x1,x2) & n_lacrosse(x2))
exists s1 x1 x2 x3 x4.(a_topic(x1) & between(x1,x3) & in(x3,x4) & n_orange(x4) & a_blue(s1) & Theme(s1,x4) & n_rival(x3) & card_eq_2(x3) & n_game(x1) & of(x1,x2) & n_lacrosse(x2))