Four men are standing around the back of a truck.
the four men are waiting on something by the truck
The men may not be waiting for something but standing by the truck for another reason.
exists e1 x1 x2 x3.(n_back(x2) & around(e1,x2) & of(x2,x3) & n_truck(x3) & Actor(e1,x1) & v_stand(e1) & n_man(x1) & card_eq_4(x1))
exists e1 x1 x2 x3.(n_truck(x3) & n_man(x1) & card_eq_4(x1) & on(e1,x2) & by(x2,x3) & n_thing(x2) & Actor(e1,x1) & v_wait(e1))