Everybody feeds off one another. As far as race, that was not by design. They just happen to be some women, some African American. GiftOutline Gift Article Thats been a subject of study for some years now.
The study is proceeded with a subject that deals with race.
( z0 proceed :ARG0 ( z1 study ) :ARG1 ( z2 subject :ARG0-of ( z3 deal :ARG2 ( z4 race ) ) ) )
(z0 / proceed-01
    :ARG0 (z1 / study-01)
    :ARG1 (z2 / subject
              :ARG0-of (z3 / deal-01
                           :ARG2 (z4 / race))))
The study is proceeded with a subject that deals with race .
z0 :ARG0 z1
z0 :ARG1 z2
z2 :ARG0-of z3
z3 :ARG2 z4