A cyclist drinks water.
A dog drinks water.
A cyclist and a dog are different beings.
exists x1 x2 x3.(a_topic(x1) & n_water(x1) & of(x1,x3) & n_drink(x3) & of(x1,x2) & n_cyclist(x2))
exists x1 x2 x3.(a_topic(x1) & n_water(x1) & of(x1,x3) & n_drink(x3) & of(x1,x2) & n_dog(x2))