Anchor: Two women are walking down the street and the younger lady is helping the older.
Entailed: Two people walking down the street, the younger helping the older.
Contradiction: Two men walking down the street, the younger helping the older.
Contradiction: I think it's only getting worse. 
Contradiction: Will I explain to you what it was that caused Monsieur Lawrence to become pale?
Contradiction: Hikers try on backpacks in a store.
Contradiction: The skateboarder goes airborne.