Anchor: While pre-existing law afforded limited opportunities for postal innovation,2 the Postal Reorganization Act of 1970 gave the newly-created United States Postal Service a clear mandate to innovate by developing effective and efficient services adapted to the needs of the Nation's mail users.
Entailed: The Postal Reorganization Act of 1970 resulted in more effective and efficient services.
Contradiction: The Postal Reorganization Act of 1970 was an unremitting failure that did not have a clear manadate.
Contradiction: The man is wearing jeans
Contradiction: Central Park Zoo has ads about penguins.
Contradiction: No part of the army oversees levees, just dams. 
Contradiction: We will require a full day just for that.