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: "where does the day of the doctor fit into the series?" whose answer is 50th anniversary.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when does the day of the doctor fit into the series
Useful Output:

Doc 1: Here's an essential guide for anyone planning just such a venture: all official televised BBC canon, in the most suitable viewing order.
Doc 2: Doctor Who returns on Saturday 12th April with The Robot Revolution, available on BBC iPlayer and BBC One in the UK and Disney+ where available.
Doc 3: How to watch Doctor Who in release date order · Doctor Who season 1 (1963) · Doctor Who season 2 (1964) · Doctor Who season 3 (1965) · Doctor Who
Doc 4: The further adventures in time and space of the alien adventurer known as the Doctor and his companions from planet Earth.
Doc 5: 2013's "The Day of the Doctor" also fits into this category  Matt Smith, John Hurt, and David Tennant as the Doctors in the Doctor Who  Matt