A dog is swimming in the water with a stick in his mouth.
A puppy is swimming toward shore
Dog could mean an animal of any age; puppy means the animal is young.  Also, the dog could be swimming in any direction, not necessarily toward shore.
exists e1 x1 x2 x3 x4.(n_water(x3) & n_mouth(x4) & of(x4,x3) & n_male(x3) & in(e1,x3) & with(e1,x2) & in(x2,x4) & n_stick(x2) & Actor(e1,x1) & v_swim(e1) & n_dog(x1))
exists e1 x1 x2.(toward(e1,x2) & n_shore(x2) & Actor(e1,x1) & v_swim(e1) & n_puppy(x1))