Anchor: A college football game is in progress.
Entailed: A college football game is still being played.
Contradiction: A college football game is over due to the extreme bad weather.
Contradiction: I know for a fact that arguing is more than enough to be a deterrent for them. 
Contradiction: Some proposals for individual accounts allow voluntary participation.
Contradiction: Three Orca whales and a seal are in the water.
Contradiction: It saves a lot of money having that talent.