Anchor: A boy in school painting in a book with his finger.
Entailed: A boy is painting
Contradiction: The boy is drawing
Contradiction: Someone completely changed the lab overnight. 
Contradiction: We make revisions to the model, so that it could be compared to Poste Italiane.
Contradiction: Linux is an entirely new creation and is therefore not trusted by tech-heads.
Contradiction: A cowboy is at a rodeo.