A young boy in sandals walks on the beach.
A child is by the sea.
A young boys is a child and the beach is by the sea.
exists e1 s1 x1 x2 x3.(n_beach(x3) & on(e1,x3) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & n_sandal(x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists p1 x1 x2.(n_sea(x2) & by(x1,x2) & n_child(x1))