One black female and one white female plus three white males, all wearing forms of black, in front of a concrete stair structure with other people sitting on the stairs.
They are all black.
One white female and three white males cannot be described as all black.
exists s1 s2 s3 s4 x1 x2 x3 x4 x11.(n_people(x11) & a_topic(s1) & subset_of(x4,s1) & all x5 e1.((n_form(x5) & Actor(e1,x5) & v_wear(e1)) -> exists e2 s5 x6 x7 x8 x9 x10 x12.(rel(x4,x5) & in(x5,x7) & with(x7,x10) & on(e2,x9) & n_stair(x9) & n_stair(x9) & Actor(e2,x12) & v_sit(e2) & (x10 = x12) & -(x10 = x11) & n_people(x10) & of(x7,x8) & n_structure(x8) & of(x8,x9) & a_concrete(s5) & Theme(s5,x8) & n_front(x7) & of(x5,x6) & n_black(x6))) & n_male(x4) & a_white(s4) & Theme(s4,x4) & card_eq_3(x4) & subset_of(x1,s1) & n_female(x3) & a_white(s3) & Theme(s3,x3) & card_eq_1(x3) & n_female(x2) & a_black(s2) & Theme(s2,x2) & card_eq_1(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists s1 s2 x1.(n_thing(x1) & a_all(s2) & Manner(s1,s2) & Theme(s1,x1) & a_black(s1))