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: Hisham suffered still worse defeats in the east, where his armies attempted to subdue both Tokharistan, with its center at Balkh, and Transoxiana, with its center at Samarkand. Both areas had already been partially conquered, but remained difficult to govern. Once again, a particular difficulty concerned the question of the conversion of non-Arabs, especially the Sogdians of Transoxiana. Following the Umayyad defeat in the "Day of Thirst" in 724, Ashras ibn 'Abd Allah al-Sulami, governor of Khurasan, promised tax relief to those Sogdians who converted to Islam, but went back on his offer when it proved too popular and threatened to reduce tax revenues. Discontent among the Khurasani Arabs rose sharply after the losses suffered in the Battle of the Defile in 731, and in 734, al-Harith ibn Surayj led a revolt that received broad backing from Arabs and natives alike, capturing Balkh but failing to take Merv. After this defeat, al-Harith's movement seems to have been dissolved, but the problem of the rights of non-Arab Muslims would continue to plague the Umayyads.
Example Output: Who suffered worse defeats in the west?

Example Input: Passage: In early 12th-century al-Andalus, the Arabian philosopher, Ibn Tufail (Abubacer), wrote discussions on materialism in his philosophical novel, Hayy ibn Yaqdhan (Philosophus Autodidactus), while vaguely foreshadowing the idea of a historical materialism.
Example Output: When was Ibn Tufail born?

Example Input: Passage: In March 2013 Mendes said he would not return to direct the next film in the series, then known as Bond 24; he later recanted and announced that he would return, as he found the script and the plans for the long-term future of the franchise appealing. In directing Skyfall and Spectre, Mendes became the first director to oversee two consecutive Bond films since John Glen directed The Living Daylights and Licence to Kill in 1987 and 1989. Skyfall writer John Logan resumed his role of scriptwriter, collaborating with Neal Purvis and Robert Wade, who returned for their sixth Bond film.[N 4] The writer Jez Butterworth also worked on the script, alongside Mendes and Craig. Dennis Gassner returned as the film's production designer, while cinematographer Hoyte van Hoytema took over from Roger Deakins. In July 2015 Mendes noted that the combined crew of Spectre numbered over one thousand, making it a larger production than Skyfall. Craig is listed as co-producer.
Example Output:
Who said he would return to direct Bond 24 in March 2013?