A man using a metal detector walking on the beach as people are in the water and on the beach.
A man looking for buried treasure at the beach.
A man with a metal detector would not always be looking for buried treasure.
exists e1 p1 x1 x2 x3 x4 x5 x6 x8.(n_beach(x6) & n_beach(x6) & n_water(x8) & a_topic(x1) & exists p2 x7.(on(x7,x6) & in(x7,x8) & n_people(x7)) & as(e1,p1) & Theme(e1,x3) & Actor(e1,x2) & v_use(e1) & on(x3,x6) & n_walking(x3) & of(x3,x5) & n_detector(x5) & of(x3,x4) & n_metal(x4) & (x1 = x2) & n_man(x1))
exists e1 e2 x1 x2 x3 x4.(n_beach(x4) & a_topic(x1) & for(e1,x3) & at(x3,x4) & n_treasure(x3) & Theme(e2,x3) & v_bury(e2) & Actor(e1,x2) & v_look(e1) & (x1 = x2) & n_man(x1))