A dog is fetching a stick out of very clear water.
A dog is sleeping on the front porch.
A sleeping dog can not be fetching.
exists e1 s1 x1 x2 x3.(of(e1,x3) & n_water(x3) & a_clear(s1) & Theme(s1,x3) & r_very(x3) & r_out(e1) & Theme(e1,x2) & Actor(e1,x1) & v_fetch(e1) & n_stick(x2) & n_dog(x1))
exists e1 x1 x2 x3.(n_porch(x2) & of(x2,x3) & n_front(x3) & on(e1,x2) & Actor(e1,x1) & v_sleep(e1) & n_dog(x1))