Anchor: But 'twould never work.
Entailed: Alas, it would never work. 
Contradiction: It could definitely work. 
Contradiction: Buddha died at the age of 46 and Buddhism died with him.
Contradiction: There were over 25k post offices around at the time when 1998's fiscal year ended.
Contradiction: I only have only ever had one credit card.
Contradiction: A group of people are gathered to work on a construction project.