two people playing basketball.
A basketball game is being played.
If people are playing basketball, then it follows that a basketball game is being played.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_basketball(x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x1) & v_play(e1) & n_game(x1) & of(x1,x2) & n_basketball(x2))