four young children, two girls and two boys, play what appears to be horseshoes.
The children are sleeping.
if children are sleeping they cannot be playing with horseshoes.
exists s1 x1 x2 x3 x4.(exists e2 e1 p1 x5.(n_thing(x5) & Theme(e2,x5) & Actor(e2,x1) & v_play(e2) & Topic(e1,p1) & Actor(e1,x5) & v_appear(e1) & exists p2 x6.((x5 = x6) & n_horseshoe(x6))) & rel(x1,x2) & subset_of(x4,x2) & n_boy(x4) & card_eq_2(x4) & subset_of(x3,x2) & n_girl(x3) & card_eq_2(x3) & n_child(x1) & a_young(s1) & Theme(s1,x1) & card_eq_4(x1))
exists e1 x1.(n_child(x1) & Actor(e1,x1) & v_sleep(e1))