people at beach looking for things in sand
The people are on the beach.
People are looking for things in the sand on the beach, so people are on the beach.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & for(e1,x4) & in(x4,x5) & n_sand(x5) & n_thing(x4) & Actor(e1,x3) & v_look(e1) & (x1 = x3) & at(x1,x2) & n_beach(x2) & n_people(x1))
exists p1 x1 x2.(n_beach(x2) & n_people(x1) & on(x1,x2))