The two girls are playing on a yellow and red jungle gym.
Two friends play on a jungle gym.
two girls doesn't imply they are friends
exists e1 s1 s2 x1 x2 x3.(n_girl(x1) & card_eq_2(x1) & on(e1,x2) & n_gym(x2) & of(x2,x3) & n_jungle(x3) & a_red(s2) & Theme(s2,x2) & a_yellow(s1) & Theme(s1,x2) & Actor(e1,x1) & v_play(e1))
exists e1 x1 x2 x3.(on(e1,x2) & n_gym(x2) & of(x2,x3) & n_jungle(x3) & Actor(e1,x1) & v_play(e1) & n_friend(x1) & card_eq_2(x1))