A city street is being cleaned by a man in a green vehicle.
The vehicle helps remove trash.
If the green vehicle is helping clean then it can be picking up trash.
exists e1 s1 x1 x2 x3 x4.(Actor(e1,x3) & in(x3,x4) & n_vehicle(x4) & a_green(s1) & Theme(s1,x4) & n_man(x3) & Theme(e1,x1) & v_clean(e1) & n_street(x1) & of(x1,x2) & n_city(x2))
exists e1 p1 x1.(n_vehicle(x1) & exists e2 x2.(Theme(e2,x2) & Actor(e2,x1) & v_remove(e2) & n_trash(x2)) & Topic(e1,p1) & Actor(e1,x1) & v_help(e1))