The large gray colored dog is jumping on the beach.
A dog sleeping on the front porch.
One cannot be jumping and sleeping simultaneously
exists e1 e2 s1 s2 x1 x2.(n_beach(x2) & n_dog(x1) & Theme(e1,x1) & v_color(e1) & a_gray(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1) & on(e2,x2) & Actor(e2,x1) & v_jump(e2))
exists e1 x1 x2 x3 x4.(n_porch(x3) & of(x3,x4) & n_front(x4) & a_topic(x1) & on(e1,x3) & Actor(e1,x2) & v_sleep(e1) & (x1 = x2) & n_dog(x1))