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.

[Q]: Passage: Department stores today have sections that sell the following: clothing, furniture, home appliances, toys, cosmetics, gardening, toiletries, sporting goods, do it yourself, paint, and hardware and additionally select other lines of products such as food, books, jewelry, electronics, stationery, photographic equipment, baby products, and products for pets. Customers check out near the front of the store or, alternatively, at sales counters within each department. Some are part of a retail chain of many stores, while others may be independent retailers. In the 1970s, they came under heavy pressure from discounters. Since 2010, they have come under even heavier pressure from online stores such as Amazon.
[A]: What sorts of departments might one see in a minor department store?


[Q]: Passage: The ABS plastic used in the casing of some older SNES and Super Famicom consoles is particularly susceptible to oxidization on exposure to air, likely due to an incorrect mixture of the stabilizing or flame retarding additives. This, along with the particularly light color of the original plastic, causes affected consoles to quickly become yellow; if the sections of the casing came from different batches of plastic, a "two-tone" effect results. The color can sometimes be restored with UV light and a hydrogen peroxide solution.
[A]: What color did affected consoles become after exposure to UV light?


[Q]: Passage: From January 18–20, 2010 a national conference on Tibet and areas inhabited by Tibetans in Sichuan, Yunnan, Gansu and Qinghai was held in China and a substantial plan to improve development of the areas was announced. The conference was attended by General secretary Hu Jintao, Wu Bangguo, Wen Jiabao, Jia Qinglin, Li Changchun, Xi Jinping, Li Keqiang, He Guoqiang and Zhou Yongkang, all members of CPC Politburo Standing Committee signaling the commitment of senior Chinese leaders to development of Tibet and ethnic Tibetan areas. The plan calls for improvement of rural Tibetan income to national standards by 2020 and free education for all rural Tibetan children. China has invested 310 billion yuan (about 45.6 billion U.S. dollars) in Tibet since 2001. "Tibet's GDP was expected to reach 43.7 billion yuan in 2009, up 170 percent from that in 2000 and posting an annual growth of 12.3 percent over the past nine years."
[A]:
Who attended the 2018 conference on Tibet?