People from an African tribe are gathered outside.
Muslim people are outside
The people outside are either African or Muslim
exists e1 s1 s2 x1 x2.(a_outside(s2) & Manner(e1,s2) & Theme(e1,x1) & v_gather(e1) & from(x1,x2) & n_tribe(x2) & a_african(s1) & Theme(s1,x2) & n_people(x1))
exists s1 x1 x2.(Theme(s1,x1) & a_outside(s1) & n_people(x1) & (x1 = x2) & ne_nam_muslim(x2))