Anchor: This would allow a plausible estimate of the revenue the Postal Service would receive by applying domestic postage rates to such mail.
Entailed: The Postal Service sometimes applies a domestic postage rate to mail.
Contradiction: It is not possible to estimate the revenue for the Postal Service.
Contradiction: No one realizes that the Roman empire had serious internal weaknesses. 
Contradiction: The employee used to perform at a high level.
Contradiction: A person in shorts is setting up a tent on a beach in the sunshine
Contradiction: The name of the apprentice was Sersa Garm.