A person swimming underwater in a swimming pool.
A swimemr is underwater in a swimming pool
swimming underwater in a swimming pool by a person is amazing
exists x1 x2 x3 x4.(a_topic(x1) & in(x1,x3) & n_pool(x3) & of(x3,x4) & n_swimming(x4) & n_swimming(x1) & Time(x1,x2) & n_underwater(x2) & n_person(x1))
exists p1 x1 x2 x3.(in(p1,x2) & n_pool(x2) & of(x2,x3) & n_swimming(x3) & exists x4.((x1 = x4) & n_underwater(x4)) & n_swimemr(x1))