A large, black dog is running in the sand on the beach.
The dog is chasing a Frisbee.
Not every running dog is chasing a Frisbee.
exists e1 s1 s2 s3 x1 x2 x3.(n_beach(x3) & n_sand(x2) & on(e1,x3) & in(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_black(s3) & Theme(s3,x1) & a_,(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_frisbee(x2))