Anchor: It was the main entrance to the castle, and a formidable obstacle to the enemy.
Entailed: It was the primary way to enter to castle and a big roadblock for the enemy.
Contradiction: It was simple a backdoor to the castle and not daunting to the enemy.
Contradiction: A man runs away from a horse
Contradiction: The man is making a gesture.
Contradiction: Policeman sitting at a desk.
Contradiction: some people compete