Anchor: The rival teams are playing basketball.
Entailed: People are playing a sport.
Contradiction: Fish are swimming in a pond.
Contradiction: There is an abundance of instructors and literature. 
Contradiction: Federal information security officials believed that they had very little opportunity to discuss information security issues with their CIOs.
Contradiction: I was wrong in assuming Yates to term was a bad idea.
Contradiction: Two men are preparing pita bread.