A construction worker is standing next to a yellow metal structure.
The construction worker is african american.
Not all construction worker standing next to a yellow metal structure is African american.
exists e1 s1 x1 x2 x3 x4.(to(e1,x3) & n_structure(x3) & of(x3,x4) & n_metal(x4) & a_yellow(s1) & Theme(s1,x3) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists p1 x1 x2.(n_worker(x1) & of(x1,x2) & n_construction(x2) & exists s1 x3.((x1 = x3) & n_american(x3) & a_african(s1) & Theme(s1,x3)))