You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when did the old £50 note go out of circulation?" whose answer is 20 September 1996.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the old £50 note go out of circulation
Useful Output:

Doc 1: The old paper £50 note goes out of circulation on 30 September 2022. Old paper £20 notes will also be withdrawn from circulation on the same day
Doc 2: From September 2022 - the old versions of the notes are being withdrawn from circulation, having been replaced by the new polymer notes. Polymer
Doc 3: More than £17bn worth of paper notes remain in circulation, the Bank said. But after 30 September, people will not be able to use the paper
Doc 4: Spain to withdraw worn €50 notes from July. Find out how to exchange them, what to look out for, and how to avoid losing money this summer.
Doc 5: The old, paper £50 notes will remain in circulation until the end of September 2022.  The old paper £20 notes – which feature economist Adam