A dog runs along a beach near the waves.
The dog is swimming in the water.
The dog can not be swimming as it runs.
exists e1 x1 x2 x3.(n_wave(x3) & along(e1,x2) & near(x2,x3) & n_beach(x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))
exists e1 x1 x2.(n_water(x2) & n_dog(x1) & in(e1,x2) & Actor(e1,x1) & v_swim(e1))