Text: The capital of Emilia-Romagna is a thriving town with a certain patrician atmosphere to its beautifully-preserved historic center lined by loggias or arcade-covered sidewalks, 21 miles of them.
Entailment: The thriving town has 21 miles of arcade-covered sidewalks.
Contradiction: The town's historic center has undergone many renovations and as much, little of the original is preserved.