A little boy swimming in a pool with a mask on.
The boy is swimming.
the pool gives context to where the boy is swimming
exists s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x3) & with(x3,x4) & Theme(s2,x5) & a_on(s2) & (x4 = x5) & n_mask(x4) & n_pool(x3) & n_swimming(x1) & of(x1,x2) & n_boy(x2) & a_little(s1) & Theme(s1,x1))
exists p1 x1.(n_boy(x1) & exists x2.((x1 = x2) & n_swimming(x2)))