There is a black and white dog in a sparking blue pool.
There is a cat and only a cat in the blue pool.
A dog cannot be a cat simultaneously.
exists p1 x1 s1 s2 s3 s4 x2 x3.((x1 = x2) & in(x2,x3) & n_pool(x3) & a_blue(s4) & Theme(s4,x3) & a_sparking(s3) & Theme(s3,x3) & n_dog(x2) & a_white(s2) & Theme(s2,x2) & a_black(s1) & Theme(s1,x2))
exists p1 s1 s2 x1 x6 x8.(n_pool(x8) & a_blue(s2) & Theme(s2,x8) & n_pool(x6) & a_blue(s1) & Theme(s1,x6) & exists x2 x3 x4 x5.((x1 = x2) & all x7.((subset_of(x7,x2) & in(x7,x8)) -> (x4 = x7)) & (x4 = x5) & subset_of(x5,x2) & in(x5,x6) & n_cat(x5) & subset_of(x3,x2) & n_cat(x3)))