Two smiling girls sit on a yellow bouncy ball.
Two girls swimming in a lake.
They cannot be sitting and swimming at the same time.
exists e1 e2 s1 x1 x2 x3.(on(e2,x2) & n_ball(x2) & of(x2,x3) & n_bouncy(x3) & a_yellow(s1) & Theme(s1,x2) & Actor(e2,x1) & v_sit(e2) & n_girl(x1) & Actor(e1,x1) & v_smile(e1) & card_eq_2(x1))
exists x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_lake(x3) & n_swimming(x1) & of(x1,x2) & n_girl(x2) & card_eq_2(x1))