Two children are laughing in the grass.
There are two children in the grass.
While laughing in grass, one is still in the grass.
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_laugh(e1) & n_child(x1) & card_eq_2(x1))
exists p1 x1 x3.(n_grass(x3) & exists x2.((x1 = x2) & in(x2,x3) & n_child(x2) & card_eq_2(x2)))