Some men in safety hats and orange vests are working on a building.
They are wearing other safety clothing.
Just because some men are in safety hands and orange vests, it doesn't necessarily mean that They are wearing other safety clothing.
exists e1 x1 x2 x3 x4 x5 x6 x7.(on(e1,x7) & n_building(x7) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & subset_of(x5,x2) & n_vest(x5) & of(x5,x6) & n_orange(x6) & subset_of(x3,x2) & n_hat(x3) & of(x3,x4) & n_safety(x4) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & -(x2 = x3) & n_clothing(x3) & of(x3,x1) & n_safety(x1) & n_clothing(x2) & of(x2,x1) & n_thing(x1))