Before the concert the cameramen scan the crowd of fans.
Cameramen adjust their cameras to capture the show's star.
the Cameraman scanning the fans and capturing the star are two different actions that cannot happen at the same time.
exists e1 x1 x2 x3 x4.(n_concert(x4) & n_crowd(x2) & n_cameraman(x1) & before(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_scan(e1) & of(x2,x3) & n_fan(x3))
exists e1 p1 x1 x2 x3 x4.(n_star(x4) & of(x4,x3) & n_show(x3) & n_camera(x2) & of(x2,x1) & n_thing(x1) & ne_nam_cameramen(x1) & Topic(e1,p1) & exists e2.(Theme(e2,x4) & Actor(e2,x1) & v_capture(e2)) & Theme(e1,x2) & Actor(e1,x1) & v_adjust(e1))