The two girls are playing on a yellow sit-and-bounce.
two girls play
Play and playing indicate the same activity.
exists e1 s1 x1 x2.(n_girl(x1) & card_eq_2(x1) & on(e1,x2) & n_sit-and-bounce(x2) & a_yellow(s1) & Theme(s1,x2) & Actor(e1,x1) & v_play(e1))
exists e1 x1.(Actor(e1,x1) & v_play(e1) & n_girl(x1) & card_eq_2(x1))