A man alone on a gravely beach.
A man is with a crowd of people in a pond.
there cannot be a crowd and be alone at the same time.
exists s1 x1 x2.(a_topic(x1) & on(x1,x2) & n_beach(x2) & a_gravely(s1) & Theme(s1,x2) & r_alone(x1) & n_man(x1))
exists p1 x1.(exists x2 x3 x4.(with(x1,x2) & in(x2,x4) & n_pond(x4) & of(x2,x3) & n_people(x3) & n_crowd(x2)) & n_man(x1))