Anchor: A group of five police officers on motorcycles are riding on a city street.
Entailed: Five police officers on motorcycles are riding on a city street.
Contradiction: A cop is giving out a ticket to a motorist.
Contradiction: The aquarium is enormous and features exotic fish from all over the world.
Contradiction: Annette was keeping her voice down to a whisper. 
Contradiction: No on has indicated that standardization could make the system more accessible.
Contradiction: There is more than one side to amicable behavior.