A man rides a sled pulled by a team of dogs.
The dogs are pulling the sled through a blizzard.
Dogs pulling a sled doesn't imply that it's a blizzard.
exists e1 e2 x1 x2 x3 x4 x5.(Theme(e2,x2) & Actor(e2,x1) & v_ride(e2) & Actor(e1,x4) & of(x4,x5) & n_dog(x5) & n_team(x4) & Theme(e1,x3) & v_pull(e1) & (x2 = x3) & n_sled(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_sled(x2) & n_dog(x1) & through(e1,x3) & n_blizzard(x3) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1))