Anchor: The twelve partners in this collaboration have recently signed agreements specifying the duties of each partner.
Entailed: The partners in this collaboration signed agreements specifying their duties 
Contradiction: There is no such agreement specifying their duties
Contradiction: The zombie likes tennis.
Contradiction: The best time to see the square in its entirety is during the winter season.
Contradiction: A woman waits for the bus.
Contradiction: The Postal Service surveys carriers about mail delivery volume by route.