Two boys stand beside a pile of garbage on the ground.
Children linger near a garbage pile
Not all the children are boys
exists e1 x1 x2 x3 x4.(n_ground(x4) & on(e1,x4) & beside(e1,x2) & of(x2,x3) & n_garbage(x3) & n_pile(x2) & Actor(e1,x1) & v_stand(e1) & n_boy(x1) & card_eq_2(x1))
exists x1 x2 x3 x4.(a_topic(x1) & near(x1,x3) & n_pile(x3) & of(x3,x4) & n_garbage(x4) & n_linger(x1) & (x1 = x2) & ne_nam_children(x2))