A dog takes off running on the sand.
The dog is playing on the beach
We have no idea why the dog takes off, he could be doing something other than playing.
exists e2 e1 s1 x1 x2.(n_sand(x2) & for(e1,e2) & on(e2,x2) & Actor(e2,x1) & v_run(e2) & a_off(s1) & Manner(e1,s1) & Actor(e1,x1) & v_take(e1) & n_dog(x1))
exists e1 x1 x2.(n_beach(x2) & n_dog(x1) & on(e1,x2) & Actor(e1,x1) & v_play(e1))