Young children on a sled are being pulled through the snow.
Kids are being pulled through snow at a high speed
Being pulled on a sled does not imply being pulled at a high speed.
exists e1 s1 x1 x2 x3.(n_snow(x3) & through(e1,x3) & Theme(e1,x1) & v_pull(e1) & on(x1,x2) & n_sled(x2) & n_child(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(through(e1,x2) & at(x2,x3) & n_speed(x3) & a_high(s1) & Theme(s1,x3) & n_snow(x2) & Theme(e1,x1) & v_pull(e1) & n_kid(x1))