Anchor: In addition, discounts encourage bulk advertising mailers to sort their mail all the way to the carrier's walk sequence, thereby avoiding the carrier in-office function.
Entailed: Bulk advertisers allow the carrier to sort on the route instead of in the office.
Contradiction: Bulk advertising is a major drain on a carrier's time in the office. 
Contradiction: They are totally deserving of the interest.
Contradiction: At that time, I hated Mexican food.
Contradiction: It's not built in to it. 
Contradiction: Poor little thing!