Anchor: A greyhound dog race is happening at the track.
Entailed: A dog race is happening at the track.
Contradiction: A cat race is happening at the track.
Contradiction: From Skiathos, you can not reach Skopelos, Allonissos or Skyros.
Contradiction: The city has power.
Contradiction: A young boy plays leap frog with his brother.
Contradiction: There is a boy.