Anchor: A person is digging a hole in sand while two children watch.
Entailed: A person is digging a hole while two children watch.
Contradiction: A dog is digging a hole in sand while two children watch.
Contradiction: I was never mad when I called them. 
Contradiction: A child who wears glasses is hiding behind the wood pile.
Contradiction: A Caucasian woman is tying up her boat while standing on a dock.
Contradiction: The woman is going somewhere