During a soccer game, two players jump up to headbutt the ball.
They are on opposing teams.
It can't be inferred from the 1st sentence that they are on opposing teams.
exists e1 p1 s1 x1 x2 x3 x4 x5.(n_ball(x5) & during(e1,x3) & n_game(x3) & of(x3,x4) & n_soccer(x4) & Topic(e1,p1) & exists e2.(Theme(e2,x5) & Actor(e2,x1) & v_headbutt(e2)) & a_up(s1) & Manner(e1,s1) & Actor(e1,x2) & v_jump(e1) & n_player(x2) & card_eq_2(x2) & n_player(x1) & card_eq_2(x1))
exists p1 x1.(n_thing(x1) & exists e1 x2 x3.(on(x1,e1) & Theme(e1,x3) & Actor(e1,x2) & v_oppose(e1) & n_team(x3)))