African people in tribal wear in a desert.
People are outside in a desert.
African people are people. The desert is outside.
exists s1 s2 x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_desert(x3) & in(x1,x2) & n_wear(x2) & a_tribal(s2) & Theme(s2,x2) & n_people(x1) & a_african(s1) & Theme(s1,x1))
exists s1 x1 x2.(in(s1,x2) & n_desert(x2) & Theme(s1,x1) & a_outside(s1) & n_people(x1))