Postal Service, we use a model of postal operations that follows the structure of FY 1999 costs in the U.S.
The structure of FY 1999 costs in the U.S. was not used as a model.
mnli hypothesis: The structure of FY 1999 costs in the U.S. was not used as a model. premise: Postal Service, we use a model of postal operations that follows the structure of FY 1999 costs in the U.S.