A black dog pulls a red sled in the snow.
A cat is pulling a tractor.
A dog is not the same kind of animal as a cat. An animal pulling a sled can't be said to be pulling a tractor.
exists e1 s1 s2 x1 x2 x3.(n_snow(x3) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & in(x2,x3) & n_sled(x2) & a_red(s2) & Theme(s2,x2) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_tractor(x2) & n_cat(x1))