a dog runs through the snow.
the dog is a shitzu
Not all dogs are a shitzu
exists e1 x1 x2.(n_snow(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))
exists p1 x1.(n_dog(x1) & exists x2.((x1 = x2) & n_shitzu(x2)))