Anchor: The black dog is biting the ear of the yellow dog.
Entailed: two dogs are touching each other
Contradiction: two dogs are seperated and asleep
Contradiction: Nobody is sitting
Contradiction: There are historical reasons why city carriers and rural carriers are compensated differently for their labor.
Contradiction: The basketball player struggled not to drop the ball.
Contradiction:  I started to talk to her but was interrupted by a friend.