A traffic controller is watching his camera.
The controller is hispanic.
The traffic controller isn't necessarily hispanic.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_watch(e1) & n_camera(x3) & of(x3,x1) & n_male(x1) & n_controller(x1) & of(x1,x2) & n_traffic(x2))
exists s1 x1.(n_controller(x1) & Theme(s1,x1) & a_hispanic(s1))