Anchor: A black dog is biting onto a soccer ball on the dirt ground.
Entailed: The dog's mouth is on the soccer ball
Contradiction: The white dog is inside the house.
Contradiction: Someone is riding a bike at night.
Contradiction: There were repeated complaints, but there was no proof that management ensured the security was tight.
Contradiction: You should be afraid. 
Contradiction: My kid knows all the songs people have written.