A collie running through the snow.
There is snow on the ground.
If a dog is running through the snow then there must be snow on the ground.
exists e1 x1 x2 x3.(n_snow(x3) & a_topic(x1) & through(e1,x3) & Actor(e1,x2) & v_run(e1) & (x1 = x2) & n_collie(x1))
exists p1 x1 x3.(n_ground(x3) & exists x2.((x1 = x2) & on(x2,x3) & n_snow(x2)))