A man in black talking to a woman on the street.
A man in white talking to a woman on the street.
Black and white are two different colors.
exists e1 x1 x2 x3 x4 x5.(n_street(x5) & a_topic(x1) & in(x1,x2) & to(e1,x4) & on(x4,x5) & n_woman(x4) & Actor(e1,x3) & v_talking(e1) & (x2 = x3) & n_black(x2) & n_man(x1))
exists e1 x1 x2 x3 x4 x5.(n_street(x5) & a_topic(x1) & in(x1,x2) & to(e1,x4) & on(x4,x5) & n_woman(x4) & Actor(e1,x3) & v_talking(e1) & (x2 = x3) & n_white(x2) & n_man(x1))