Anchor: Sir James arrived punctually at eight o'clock, and Julius introduced Tommy.
Entailed: Sir James was on time when he arrived at eight.  
Contradiction: Julius did not introduce Tommy to Sir James.  
Contradiction: There are people at a rock concert.
Contradiction: People clap during an event.
Contradiction: A person is pouring cereal into a bowl.
Contradiction: The governor explained his wife's actions.