A dog drinking from a creek.
A german shepard is drinking from a creek.
Just because it's a dog drinking water doesn't mean it's a german shepard.
exists x1 x2 x3.(a_topic(x1) & from(x1,x3) & n_creek(x3) & n_drinking(x1) & of(x1,x2) & n_dog(x2))
exists e1 x1 x2 x3.(from(e1,x3) & n_creek(x3) & Actor(e1,x1) & v_drink(e1) & n_shepard(x1) & of(x1,x2) & n_german(x2))