Anchor: What are own-price, cross-price and expenditure elasticities of the household-level demand for postal delivery services and how have they changed over time?
Entailed: How have your own price, cross price and expenditure elasticizes changed over time?
Contradiction: The demand for postal delivery doesn't have any correlation with pricing. 
Contradiction: The child is carrying his new Elmo book and walking to his mother.
Contradiction: A dog runs in the water.
Contradiction: That is not an approved of outcome.
Contradiction: Two dogs romp in grass.