people at beach looking for things in sand
There are people at the beach with metal detector.
just because people are at the beach looking for things in sand doesn't imply they have a metal detector
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 x3.(n_beach(x3) & exists x2 x4 x5.((x1 = x2) & with(x2,x4) & n_detector(x4) & of(x4,x5) & n_metal(x5) & at(x2,x3) & n_people(x2)))