The young boy sleds down the hill in the snow.
A boy is sledding in the snow.
Boy in both.
exists s1 x1 x2 x3 x4.(n_snow(x4) & n_hill(x3) & n_sled(x1) & of(x1,x2) & n_boy(x2) & a_young(s1) & Theme(s1,x1) & a_topic(x1) & down(x1,x3) & in(x3,x4))
exists e1 x1 x2.(n_snow(x2) & in(e1,x2) & Actor(e1,x1) & v_sled(e1) & n_boy(x1))