A referee watches two basketball players playing basketball.
The referee is watching two football players.
Football is not basketball.
exists e1 e2 x1 x2 x3 x4 x5.(Theme(e2,x2) & Actor(e2,x1) & v_watch(e2) & Theme(e1,x5) & Actor(e1,x4) & v_play(e1) & n_basketball(x5) & (x2 = x4) & n_player(x2) & of(x2,x3) & n_basketball(x3) & card_eq_2(x2) & n_referee(x1))
exists e1 x1 x2 x3.(n_referee(x1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_player(x2) & of(x2,x3) & n_football(x3) & card_eq_2(x2))