A worker wearing a bright vest and black clothes is picking up trash on the ground while people cross the street behind him.
The friends are sitting together at a bar.
There is either one worker or a group of friends. People do not usually sit and pick up trash at the same time. People cannot be outside on the street and at a bar at the same time.
exists e1 e2 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 e1 p1 x1 x2.(n_friend(x1) & at(e1,x2) & n_bar(x2) & exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1))