The two girls are playing on a yellow and red jungle gym.
Two girls building a sand castle in the sandbox.
The girls are either in the sandbox or the jungle gym, they can't do both at the same time.
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 x4.(n_sandbox(x4) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_castle(x2) & of(x2,x3) & n_sand(x3) & n_girl(x1) & card_eq_2(x1))