Anchor: A person wearing a blue backpack and helmet is walking his bicycle down the road.
Entailed: Someone is walking with his bike and has a helmet on.
Contradiction: A person is riding his bike on the grass.
Contradiction: Miss Howard is giving us too much information at once. 
Contradiction: I just finished The Things They Carried by Tim O'Brien last night; it was a great book. 
Contradiction: The woman is taking a picture of a man.
Contradiction: The kids are digging in the dirt.