instruction:
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.
question:
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.
answer:
What platform helped BSkyB to avoid ending their analogue service?


question:
Passage: The economy of Himachal Pradesh is currently the third-fastest growing economy in India.[citation needed] Himachal Pradesh has been ranked fourth in the list of the highest per capita incomes of Indian states. This has made it one of the wealthiest places in the entire South Asia. Abundance of perennial rivers enables Himachal to sell hydroelectricity to other states such as Delhi, Punjab, and Rajasthan. The economy of the state is highly dependent on three sources: hydroelectric power, tourism, and agriculture.[citation needed]
answer:
What is the third fastest growing economy in Delhi?


question:
Passage: Furthermore, in terms of job prospects, as of 2014 the average starting salary of an Imperial graduate was the highest of any UK university. In terms of specific course salaries, the Sunday Times ranked Computing graduates from Imperial as earning the second highest average starting salary in the UK after graduation, over all universities and courses. In 2012, the New York Times ranked Imperial College as one of the top 10 most-welcomed universities by the global job market. In May 2014, the university was voted highest in the UK for Job Prospects by students voting in the Whatuni Student Choice Awards Imperial is jointly ranked as the 3rd best university in the UK for the quality of graduates according to recruiters from the UK's major companies.
answer:

What collegege had the highest higher rate in 2014 among graduates?