A father in black shorts and his son are walking down the beach.
Man and son are searching for treasure.
The father and son do not need to be searching for treasure to walk on the beach.
exists e1 s1 x1 x2 x3 x4 x5.(n_beach(x5) & down(e1,x5) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & subset_of(x4,x2) & n_son(x4) & of(x4,x1) & n_male(x1) & subset_of(x3,x2) & n_shorts(x3) & a_black(s1) & Theme(s1,x3) & n_father(x1))
exists e1 x1 x2 x3 x4.(for(e1,x4) & n_treasure(x4) & Actor(e1,x1) & v_search(e1) & subset_of(x3,x1) & n_son(x3) & subset_of(x2,x1) & n_man(x2))