Two people play foosball.
Two friends play a game.
Not all people are friends.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_foosball(x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_game(x2) & n_friend(x1) & card_eq_2(x1))