a beach with blue and red boats, with people on shore
boats sailing in the water
just because there are boats doesn't mean they are sailing in the water.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & with(x2,x3) & on(x3,x4) & n_shore(x4) & n_people(x3) & n_boat(x2) & a_red(s2) & Theme(s2,x2) & a_blue(s1) & Theme(s1,x2) & n_beach(x1))
exists x1 x2 x3.(n_water(x3) & a_topic(x1) & in(x1,x3) & n_sailing(x1) & of(x1,x2) & n_boat(x2))