a man in black hugs a woman in black.
the man in white kisses a woman in red.
One man in white is kissing a woman in red while the other man in black is just hugging a woman.
exists x1.(all x2.(n_woman(x2) -> exists s1 s2 x3 x4.(a_topic(x1) & in(x1,x3) & Theme(s2,x4) & a_black(s2) & (x3 = x4) & for(x3,x2) & n_hug(x3) & a_black(s1) & Theme(s1,x3))) & n_man(x1))
exists x1.(n_man(x1) & all x2.(n_woman(x2) -> exists s1 x3 x4.(a_topic(x1) & in(x1,x3) & in(x3,x4) & n_red(x4) & for(x3,x2) & n_kiss(x3) & a_white(s1) & Theme(s1,x3))))