TASK DEFINITION: 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.
PROBLEM: Passage: The first extant Estonian book is a bilingual German-Estonian translation of the Lutheran catechism by S. Wanradt and J. Koell dating to 1535, during the Protestant Reformation period. An Estonian grammar book to be used by priests was printed in German in 1637. The New Testament was translated into southern Estonian in 1686 (northern Estonian, 1715). The two languages were united based on northern Estonian by Anton thor Helle.

SOLUTION: Who wrote the last Estonian book?

PROBLEM: Passage: During the year following that contract, with Dodsley, Burke founded the influential Annual Register, a publication in which various authors evaluated the international political events of the previous year. The extent to which Burke contributed to the Annual Register is unclear: in his biography of Burke, Robert Murray quotes the Register as evidence of Burke's opinions, yet Philip Magnus in his biography does not cite it directly as a reference. Burke remained the chief editor of the publication until at least 1789 and there is no evidence that any other writer contributed to it before 1766.

SOLUTION: What was founded the year before the contract?

PROBLEM: Passage: Over 90 weeklies, fortnightlies and quarterlies are published in Sanskrit. Sudharma, a daily newspaper in Sanskrit, has been published out of Mysore, India, since 1970, while Sanskrit Vartman Patram and Vishwasya Vrittantam started in Gujarat during the last five years. Since 1974, there has been a short daily news broadcast on state-run All India Radio. These broadcasts are also made available on the internet on AIR's website. Sanskrit news is broadcast on TV and on the internet through the DD National channel at 6:55 AM IST.

SOLUTION:
How many weeklies are published in Sanskrit?