Two people play foosball.
Two people are playing air-hockey.
Two people can either play foosball or air-hockey.
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_air-hockey(x2) & n_people(x1) & card_eq_2(x1))