Text: One wall is devoted to Bad Government, a gloomy portrait of Tyranny, badly damaged, and the other two to Siena's own enlightened Good Government, full of fascinating detail of town life roof-builders, shoe shop, school, outdoor tavern, ladies dancing in the street and hunters riding out to the surrounding countryside.
Entailment: One wall is dedicates to bad government while the other is dedicates to good government.
Contradiction: Both walls depict a utopia of a good government.