premise: The Anchor Bankside is a pub in the London Borough of Southwark. It is in the Bankside locality on the south bank of the Thames close to Southwark Cathedral and London Bridge station. A tavern establishment (under various names) has been at the pub's location for over 800 years. Behind the pub are buildings that were operated by the Anchor Brewery.
hypothesis: The Anchor Bankside has been a pub for 800 years.
reason: The location has had a pub for over 800 but that particular pub has not been there as a pub for 800 years. The system doesn't know the age of the current pub.