Black people talking in the marketplace.
This is an African marketplace.
Just because black people are at a marketplace, one  cannot assume it is an African marketplace.
exists e1 x1 x2 x3 x4.(n_marketplace(x4) & a_topic(x1) & in(e1,x4) & Actor(e1,x3) & v_talk(e1) & (x1 = x3) & n_people(x1) & (x1 = x2) & ne_nam_black(x2))
exists p1 x1.(n_thing(x1) & exists s1 x2.((x1 = x2) & n_marketplace(x2) & a_african(s1) & Theme(s1,x2)))