A bunch of construction workers work on a street while one worker walks toward the camera.
The construction workers are all wearing high visibility jackets.
Sometimes, construction workers don't wear high visibility jackets.
exists e1 p1 x1 x2 x3 x4 x6.(n_camera(x6) & exists e2 x5.(toward(e2,x6) & Actor(e2,x5) & v_walk(e2) & n_worker(x5) & card_eq_1(x5)) & while(e1,p1) & on(e1,x4) & n_street(x4) & Actor(e1,x1) & v_work(e1) & of(x1,x2) & n_worker(x2) & of(x2,x3) & n_construction(x3) & n_bunch(x1))
exists e1 s1 s2 x1 x2 x3 x4.(n_worker(x1) & of(x1,x2) & n_construction(x2) & a_all(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x1) & v_wear(e1) & n_jacket(x3) & of(x3,x4) & n_visibility(x4) & a_high(s1) & Theme(s1,x3))