A black dog sits in sand.
A dog is waiting at the beach for his owner.
You  can not infer he is at the beach.
exists e1 s1 x1 x2.(in(e1,x2) & n_sand(x2) & Actor(e1,x1) & v_sit(e1) & n_dog(x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_owner(x3) & of(x3,x2) & n_male(x2) & n_beach(x2) & at(e1,x2) & for(x2,x3) & Actor(e1,x1) & v_wait(e1) & n_dog(x1))