A black and white dog with a stick in its mouth is swimming.
A dog with an object in it's mouth is in the water.
A stick is an object. Swimming means in water.
exists p1 s1 s2 x1 x2 x3.(exists x4.((x1 = x4) & n_swimming(x4)) & with(x1,x2) & in(x2,x3) & n_mouth(x3) & of(x3,x1) & n_thing(x1) & n_stick(x2) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists p1 x1 x2 x5.(n_water(x5) & exists p2 x3 x4.((x1 = x3) & in(x4,x5) & (x3 = x4) & n_mouth(x3)) & with(x1,x2) & in(x2,x1) & n_thing(x1) & n_object(x2) & n_dog(x1))