Two Black people are sitting on separate couches.
The two people are white people.
It is either black people or white people.
exists e1 s1 s2 x1 x2.(on(e1,x2) & n_couch(x2) & a_separate(s2) & Theme(s2,x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & a_black(s1) & Theme(s1,x1) & card_eq_2(x1))
exists p1 x1.(n_people(x1) & card_eq_2(x1) & exists s1 x2.((x1 = x2) & n_people(x2) & a_white(s1) & Theme(s1,x2)))