A dog is running in the snow
A dog plays in the snow.
A dog running in the snow doesn't necessarily imply the dog plays in the snow.
exists e1 x1 x2.(n_snow(x2) & in(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))
exists e1 x1 x2.(n_snow(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1))