Boy with floaties with his feet in the sand on the beach.
A boy is swimming.
Boy with floaties with his feet in the sand on the beach does not necessary that he is swimming.
exists s1 x1 x2 x3 x4.(n_beach(x4) & n_sand(x3) & ne_nam_boy(s1) & a_topic(s1) & with(s1,x1) & with(x1,x2) & on(x2,x4) & in(x2,x3) & n_foot(x2) & of(x2,x1) & n_male(x1) & n_floaty(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_swimming(x2)) & n_boy(x1))