Three children are playing in sand near to the beach.
The children play on the swingset.
The chilren cannot be simultaneously playing in sand near to the beach and playing on the swingset.
exists e1 s1 x1 x2 x3 x4.(n_beach(x4) & in(e1,x2) & to(s1,x4) & Theme(s1,x3) & a_near(s1) & (x2 = x3) & n_sand(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1) & card_eq_3(x1))
exists e1 x1 x2.(n_swingset(x2) & n_child(x1) & on(e1,x2) & Actor(e1,x1) & v_play(e1))