A large brown dog plays in the water.
A big dog is swimming.
Playing in the water does not imply swimming.
exists s1 s2 x1 x2 x3.(n_water(x3) & a_topic(x1) & in(x1,x3) & n_play(x1) & of(x1,x2) & n_dog(x2) & a_brown(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1))
exists p1 s1 x1.(exists x2.((x1 = x2) & n_swimming(x2)) & n_dog(x1) & a_big(s1) & Theme(s1,x1))