sunbathers on benches on boardwalk at the beach.
People are sunbathing.
Sunbathing is being done on benches.
exists x1 x2 x3 x4.(n_beach(x4) & a_topic(x1) & on(x1,x2) & on(x2,x3) & at(x3,x4) & n_boardwalk(x3) & n_bench(x2) & n_sunbather(x1))
exists e1 x1.(Actor(e1,x1) & v_sunbathe(e1) & n_people(x1))