Sunbathers frolic on the beach under a bright sun.
There are no sunbathers on the beach
There either are or are not sunbathers on the beach; it is not possible for them to be both present and absent at the same time.
exists s1 s2 x1 x2 x3 x4.(n_beach(x3) & a_topic(x1) & on(x1,x3) & under(x3,x4) & n_sun(x4) & a_bright(s2) & Theme(s2,x4) & Theme(s1,x2) & a_frolic(s1) & (x1 = x2) & n_sunbather(x1))
exists p1 x1 x3.(n_beach(x3) & -exists x2.((x1 = x2) & on(x2,x3) & n_sunbather(x2)))