Two children are playing on the beach and the girl is jumping.
There are kids playing in the grass
You wouldn't be playing in the grass at the same time you're playing on the beach.
exists e2 e1 x1 x2 x3.(n_girl(x3) & n_beach(x2) & Actor(e2,x3) & v_jump(e2) & on(e1,x2) & Actor(e1,x1) & v_play(e1) & n_child(x1) & card_eq_2(x1))
exists p1 x1 x4.(n_grass(x4) & exists e1 x2 x3.((x1 = x2) & in(e1,x4) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_kid(x2)))