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.

Example Input: Passage: In the following months, NATO took a wide range of measures to respond to the threat of terrorism. On 22 November 2002, the member states of the Euro-Atlantic Partnership Council (EAPC) decided on a Partnership Action Plan against Terrorism, which explicitly states, "EAPC States are committed to the protection and promotion of fundamental freedoms and human rights, as well as the rule of law, in combating terrorism." NATO started naval operations in the Mediterranean Sea designed to prevent the movement of terrorists or weapons of mass destruction as well as to enhance the security of shipping in general called Operation Active Endeavour.
Example Output: What did terrorism respond to?

Example Input: Passage: New Zealand has a strong hunting culture. The islands making up New Zealand originally had no land mammals apart from bats. However, once Europeans arrived, game animals were introduced by acclimatisation societies to provide New Zealanders with sport and a hunting resource. Deer, pigs, goats, rabbits, hare, tahr and chamois all adapted well to the New Zealand terrain, and with no natural predators, their population exploded. Government agencies view the animals as pests due to their effects on the natural environment and on agricultural production, but hunters view them as a resource.
Example Output: What mammal was the only one that existed originally in Europe?

Example Input: Passage: Despite their usurpation of imperial authority, the Fujiwara presided over a period of cultural and artistic flowering at the imperial court and among the aristocracy. There was great interest in graceful poetry and vernacular literature. Two types of phonetic Japanese script: katakana, a simplified script that was developed by using parts of Chinese characters, was abbreviated to hiragana, a cursive syllabary with a distinct writing method that was uniquely Japanese. Hiragana gave written expression to the spoken word and, with it, to the rise in Japan's famous vernacular literature, much of it written by court women who had not been trained in Chinese as had their male counterparts. Three late tenth century and early eleventh century women presented their views of life and romance at the Heian court in Kagerō Nikki by "the mother of Fujiwara Michitsuna", The Pillow Book by Sei Shōnagon and The Tale of Genji by Murasaki Shikibu. Indigenous art also flourished under the Fujiwara after centuries of imitating Chinese forms. Vividly colored yamato-e, Japanese style paintings of court life and stories about temples and shrines became common in the mid- and late Heian periods, setting patterns for Japanese art to this day.
Example Output:
What declined while the Fujiwara controled the imperial court?