Two children play in the snow with a sled.
Two children going down a hill in a sled.
While the children are playing in the snow with a sled, we cannot assume there is a hill, nor that they are going down a hill, nor even that they are in the sled.
exists e1 x1 x2 x3.(n_snow(x2) & in(e1,x2) & with(x2,x3) & n_sled(x3) & Actor(e1,x1) & v_play(e1) & n_child(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_sled(x4) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_go(e1) & n_hill(x3) & (x1 = x2) & n_child(x1) & card_eq_2(x1))