Anchor: A blond dog runs in the grass holding a stick in its mouth.
Entailed: A blond dog runs in the grass.
Contradiction: A dog is running with a shoe in his mouth.
Contradiction: The excellent lighting made it easy to examine the room.
Contradiction: There are three men and a ball.
Contradiction: Historians say our standard of living is getting steadily worse. 
Contradiction: You have some sheep.