In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

Example input: This list contains the top 25 accounts with the most followers on the social photo-sharing platform Instagram. As of May 2018, the most followed user is Instagram's own account, with over 235 million followers. Selena Gomez is the most followed individual, with over 137 million followers. Ten accounts have exceeded 100 million followers on the site.
Example output: who has the maximum number of followers on instagram
Example explanation: The answer is talking about the Instagram accounts that have the most followers. The question asking about the maximum number of followers. So this is a good example.
Q: The Chancellor is the third-oldest major state office in English and British history; it originally carried responsibility for the Exchequer, the medieval English institution for the collection and auditing of royal revenues which dates from the Anglo-Saxon period and survived the Norman conquest of England. The earliest surviving records which are the results of the exchequer's audit, date from 1129 -- 30 under King Henry I and show continuity from previous years. The Chancellor controlled monetary policy as well as fiscal policy until 1997, when the Bank of England was granted independent control of its interest rates. The Chancellor also has oversight of public spending across Government departments.
A:
when (which century) was the position of chancellor of exchequer established