Anchor: Postal Service partially explain why mailers and third parties can sort mail at a lower cost than the Postal Service.
Entailed: Third party companies sort mail at a lower cost than the Postal Service.
Contradiction: The Postal Service has the lowest cost of sorting mail.
Contradiction: Wade Cook is not a problem.
Contradiction: Uppercase.
Contradiction: The football players are relaxing.
Contradiction: A man surfs in the ocean.