Anchor: Many of the 237 carved panels, each different, were believed to conceal poisons, as well as jewels and state papers.
Entailed: There is the belief that many of the panels have poison in them.
Contradiction: The panels are all indistinguishable from each other.
Contradiction: Each of the 237 carved panels are identical and are empty.
Contradiction: The place was full of thieves.
Contradiction: The government reduces the number of allowances over time. 
Contradiction: The person is riding a horse.