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.

[EX Q]: Passage: On 24 August, Pravda and Izvestia carried news of the non-secret portions of the Pact, complete with the now infamous front-page picture of Molotov signing the treaty, with a smiling Stalin looking on. The news was met with utter shock and surprise by government leaders and media worldwide, most of whom were aware only of the BritishFrenchSoviet negotiations that had taken place for months. The MolotovRibbentrop Pact was received with shock by Nazi Germany's allies, notably Japan, by the Comintern and foreign communist parties, and by Jewish communities all around the world. So, that day, German diplomat Hans von Herwarth, whose grandmother was Jewish, informed Guido Relli, an Italian diplomat, and American charge d'affaires Charles Bohlen on the secret protocol regarding vital interests in the countries' allotted "spheres of influence", without revealing the annexation rights for "territorial and political rearrangement".
[EX A]: Which diplomat never leaked information about the secret agreements?

[EX Q]: Passage: The first union was built on campus in 1926 as a campus community center. The unions are still the "living rooms" of campus today and include three locations the Kansas Union and Burge Union at the Lawrence Campus and Jayhawk Central at the Edwards Campus. The KU Memorial Unions Corporation manages the KU Bookstore (with seven locations). The KU Bookstore is the official bookstore of KU. The Corporation also includes KU Dining Services, with more than 20 campus locations, including The Market (inside the Kansas Union) and The Underground (located in Wescoe Hall). The KU Bookstore and KU Dining Services are not-for-profit, with proceeds going back to support student programs, such as Student Union Activities.
[EX A]: When was KU's last student union constructed?

[EX Q]: Passage: In 2008 the Government of Canada made efforts, through the Canada First Defence Strategy, to modernize the Canadian Armed Forces, through the purchase of new equipment, improved training and readiness, as well as the establishment of the Canadian Special Operations Regiment. More funds were also put towards recruitment, which had been dwindling throughout the 1980s and '90s, possibly because the Canadian populace had come to perceive the CAF as peacekeepers rather than as soldiers, as shown in a 2008 survey conducted for the Department of National Defence. The poll found that nearly two thirds of Canadians agreed with the country's participation in the invasion of Afghanistan, and that the military should be stronger, but also that the purpose of the forces should be different, such as more focused on responding to natural disasters. Then CDS, Walter Natynczyk, said later that year that while recruiting has become more successful, the CF was facing a problem with its rate of loss of existing members, which increased between 2006 and 2008 from 6% to 9.2% annually.
[EX A]:
What was the effort called to downgrade the Canadian Forces?