Four people with black hair pose for a picture with windows in the background.
Four people with black hair and blue eyes pose for a picture with windows in the background.
There is no way to determine if the four people have blue eyes.
exists e1 s1 x1 x2 x3 x4 x5.(n_background(x5) & for(e1,x3) & with(x3,x4) & in(x4,x5) & n_window(x4) & n_picture(x3) & Actor(e1,x1) & v_pose(e1) & with(x1,x2) & n_hair(x2) & a_black(s1) & Theme(s1,x2) & n_people(x1) & card_eq_4(x1))
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_background(x7) & for(e1,x5) & with(x5,x6) & in(x6,x7) & n_window(x6) & n_picture(x5) & Actor(e1,x1) & v_pose(e1) & with(x1,x2) & subset_of(x4,x2) & n_eye(x4) & a_blue(s2) & Theme(s2,x4) & subset_of(x3,x2) & n_hair(x3) & a_black(s1) & Theme(s1,x3) & n_people(x1) & card_eq_4(x1))