A worker wearing a bright vest and black clothes is picking up trash on the ground while people cross the street behind him.
There are no people near the man in the vest.
If there are people crossing the street behind the man, then they must be near him.
exists e2 e1 p1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7 x9.(n_male(x7) & n_street(x9) & n_ground(x7) & exists e3 x8.(behind(e3,x7) & Theme(e3,x9) & Actor(e3,x8) & v_cross(e3) & n_people(x8)) & while(e2,p1) & on(e2,x7) & a_up(s3) & Manner(e2,s3) & Theme(e2,x6) & Actor(e2,x1) & v_pick(e2) & n_trash(x6) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & subset_of(x5,x3) & n_clothes(x5) & a_black(s2) & Theme(s2,x5) & subset_of(x4,x3) & n_vest(x4) & a_bright(s1) & Theme(s1,x4) & (x1 = x2) & n_worker(x1))
exists p1 x1 x2 x4.(n_vest(x2) & n_man(x4) & in(p1,x2) & -exists x3.((x1 = x3) & near(x3,x4) & n_people(x3)))