Anchor: Such systems might allow lower rates for qualifying mail, while pieces that would not qualify might be rejected or required to pay a surcharge based on costs.
Entailed: Pieces that do not qualify will be rejected or have to pay extra fees.
Contradiction: All mail will qualify for lower rates with the such systems,
Contradiction: My grandson. 
Contradiction: He had no reason to claim the kinship.
Contradiction: It's always worth being truthful, instead of lying every time.
Contradiction: A girl picks her nose.