A man wearing a uniform is standing just inside the back of a delivery truck, while two other men are standing on the ground near the truck.
A delivery man is waiting for two men to help him unload the truck.
Just because he is standing there does not mean he is waiting, and the men are not necessarily there to help him unload.
exists e1 e2 p1 s1 x1 x2 x3 x4 x5 x6 x8.(n_ground(x8) & n_back(x4) & exists e3 x7.(on(e3,x8) & near(x8,x5) & Actor(e3,x7) & v_stand(e3) & -(x7 = x1) & n_man(x7) & card_eq_2(x7)) & n_truck(x5) & n_truck(x5) & n_man(x1) & n_man(x1) & while(e2,p1) & inside(e2,x4) & of(x4,x5) & of(x5,x6) & n_delivery(x6) & a_just(s1) & Manner(e2,s1) & Actor(e2,x1) & v_stand(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_uniform(x3) & (x1 = x2))
exists e1 p1 x1 x2 x3 x4 x5 x6.(n_truck(x6) & Topic(e1,p1) & exists e2 p2.(exists e3.(Theme(e3,x6) & Actor(e3,x2) & v_unload(e3)) & Recipient(e2,p2) & Actor(e2,x1) & Topic(e2,x2) & v_help(e2)) & n_male(x2) & for(e1,x5) & n_man(x5) & card_eq_2(x5) & Actor(e1,x3) & v_wait(e1) & n_man(x3) & of(x3,x4) & n_delivery(x4) & n_man(x1) & of(x1,x2) & n_delivery(x2))