A man is building a large sand castle on the beach.
A man is in the sand and working on putting together a sand castle.
If you are on the beach, it means you are in the sand.
exists e1 s1 x1 x2 x3 x4.(n_beach(x4) & on(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_castle(x2) & of(x2,x3) & n_sand(x3) & a_large(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(exists e2 e1 s1 x2 x3 x4 x5 x6.(in(x1,x2) & subset_of(e1,x2) & on(e1,e2) & a_together(s1) & Manner(e2,s1) & Theme(e2,x6) & Actor(e2,x5) & v_put(e2) & n_castle(x6) & of(x6,x3) & n_sand(x3) & n_sand(x3) & Actor(e1,x4) & v_work(e1) & n_thing(x4) & subset_of(x3,x2)) & n_man(x1))