This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.

Input: Consider Input: Passage: The service started on 1 September 1993 based on the idea from the then chief executive officer, Sam Chisholm and Rupert Murdoch, of converting the company business strategy to an entirely fee-based concept. The new package included four channels formerly available free-to-air, broadcasting on Astra's satellites, as well as introducing new channels. The service continued until the closure of BSkyB's analogue service on 27 September 2001, due to the launch and expansion of the Sky Digital platform. Some of the channels did broadcast either in the clear or soft encrypted (whereby a Videocrypt decoder was required to decode, without a subscription card) prior to their addition to the Sky Multichannels package. Within two months of the launch, BSkyB gained 400,000 new subscribers, with the majority taking at least one premium channel as well, which helped BSkyB reach 3.5 million households by mid-1994. Michael Grade criticized the operations in front of the Select Committee on National Heritage, mainly for the lack of original programming on many of the new channels.

Output: What platform helped BSkyB to avoid ending their analogue service?

Input: Consider Input: Passage: Numerous plays are put on every year at Eton College; there is one main theatre, called the Farrer (seating 400) and 2 Studio theatres, called the Caccia Studio and Empty Space (seating 90 and 80 respectively). There are about 8 or 9 house productions each year, around 3 or 4 "independent" plays (not confined solely to one house, produced, directed and funded by Etonians) and three school plays, one specifically for boys in the first two years, and two open to all years. The School Plays have such good reputations that they are normally fully booked every night. Productions also take place in varying locations around the School, varying from the sports fields to more historic buildings such as Upper School and College Chapel.

Output: How many people can sit in College Chapel?

Input: Consider Input: Passage: Notable Old Etonians in the media include the former Political Editor of both ITN and The Times, Julian Haviland; the current BBC Deputy Political Editor, James Landale, and the BBC Science Editor, David Shukman; the current President of Conde Nast International and Managing Director of Conde Nast UK, Nicholas Coleridge; the former ITN newscaster and BBC Panorama presenter, Ludovic Kennedy; current BBC World News and BBC Rough Justice current affairs presenter David Jessel; former chief ITV and Channel 4 racing commentator John Oaksey; 1950s BBC newsreader and 1960s ITN newscaster Timothy Brinton; 1960s BBC newsreader Corbet Woodall; the former Editor of The Daily Telegraph, Charles Moore; the former Editor of The Spectator, Ferdinand Mount; and the current Editor of The Mail on Sunday, Geordie Greig.
Output: In what decade did Julian Haviland graduate from Eton?