Many middle eastern people are sitting in the back of a blue truck.
The people in the truck are outdoors.
People in a truck may be in the back.
exists e1 s1 s2 s3 x1 x2 x3.(n_back(x2) & in(e1,x2) & of(x2,x3) & n_truck(x3) & a_blue(s3) & Theme(s3,x3) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & a_eastern(s2) & Theme(s2,x1) & a_middle(s1) & Theme(s1,x1) & n_quantity(x1))
exists p1 x1 x2.(n_truck(x2) & n_people(x1) & exists x3.((x1 = x3) & n_outdoors(x3)) & in(x1,x2))