An adult and child walking along the beach on the sand.
a child is collecting sea shells
You don't have to be collecting seashells if you're walking along a beach
exists s1 x1 x2 x3 x4 x5.(n_sand(x5) & n_beach(x4) & a_topic(s1) & along(s1,x4) & on(x4,x5) & subset_of(x2,s1) & n_walking(x2) & of(x2,x3) & n_child(x3) & subset_of(x1,s1) & n_adult(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_collect(e1) & n_shell(x2) & of(x2,x3) & n_sea(x3) & n_child(x1))