Black and white man boxing.
People are boxing.
A black and a white man are people.
exists s1 s2 x1 x2 x3.(n_boxing(x1) & of(x1,x3) & n_man(x3) & a_white(s2) & Theme(s2,x1) & a_.(s1) & Theme(s1,x1) & (x1 = x2) & ne_nam_black(x2) & a_topic(x1))
exists e1 x1.(Actor(e1,x1) & v_box(e1) & n_people(x1))