Workers are sorting items in a truck.
The workers organize packages in the UPS truck.
The workers are not necessarily organizing packages and they do not necessarily work for UPS.
exists e1 x1 x2 x3.(in(e1,x3) & n_truck(x3) & Theme(e1,x2) & Actor(e1,x1) & v_sort(e1) & n_item(x2) & n_worker(x1))
exists e1 x1 x2 x3 x4.(n_truck(x3) & (x3 = x4) & ne_org_ups(x4) & n_worker(x1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_organize(e1) & n_package(x2))