some people and dog are enjoying the beach of a bay surrounded by green hills.
The family is walking their dog on the beach.
green hills doesn't always mean  beach.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(n_beach(x4) & Theme(e2,x4) & Actor(e2,x1) & v_enjoy(e2) & of(x4,x5) & Actor(e1,x7) & n_hill(x7) & a_green(s1) & Theme(s1,x7) & Theme(e1,x6) & v_surround(e1) & (x5 = x6) & n_bay(x5) & n_dog(x3) & n_people(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists e1 x1 x2 x3.(n_beach(x3) & n_dog(x2) & of(x2,x1) & n_thing(x1) & n_family(x1) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1))