Two infants are at play in the yard.
There are children outdoors.
Children are infants and the yard is outdoors.
exists p1 x1 x3.(n_yard(x3) & exists x2.(at(x1,x2) & in(x2,x3) & n_play(x2)) & n_infant(x1) & card_eq_2(x1))
exists p1 x1 x2 x3.((x1 = x2) & n_outdoors(x2) & of(x2,x3) & n_child(x3))