Anchor: Rationalizing street delivery cost by decreasing the quality of delivery service can have a profound impact on the postal density and consequently, on delivery cost.
Entailed: Lowering the quality of delivery service might have an effect on postal density and delivery cost.
Contradiction: Decreasing the standard of delivery service will never have any impact on delivery cost.
Contradiction: the birds were short necked
Contradiction: Man shaving his face
Contradiction: Of course, that isn't the case.
Contradiction: A man reading a newspaper outside.