A sailing boat with many people sails on water.
The boat is white.
Not all boats are white.
exists x1 x2 x3 x4 x5.(a_topic(x1) & with(x1,x3) & on(x3,x5) & n_water(x5) & Time(x3,x4) & n_sail(x4) & n_people(x3) & n_quantity(x3) & n_boat(x1) & of(x1,x2) & n_sailing(x2))
exists s1 x1.(n_boat(x1) & Theme(s1,x1) & a_white(s1))