Two people play foosball.
A couple of people are playing foosball.
Two people can be called a couple of people
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 x3.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_foosball(x3) & of(x1,x2) & n_people(x2) & n_couple(x1))