Anchor: two girls hold up a card reading "know what this is"?
Entailed: Two girls hold up a card together.
Contradiction: Two girls hold up a sign that says "I know who you are".
Contradiction: Three men chat about politics.
Contradiction: Two dogs are playing with each other
Contradiction: The Clear Skies Act prohibits smoking more than one pack of cigarettes a day.
Contradiction: A dog is running.