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: The northern side of Miami includes Midtown, a district with a great mix of diversity with many West Indians, Hispanics, European Americans, bohemians, and artists. Edgewater, and Wynwood, are neighborhoods of Midtown and are made up mostly of high-rise residential towers and are home to the Adrienne Arsht Center for the Performing Arts. The wealthier residents usually live in the northeastern part, in Midtown, the Design District, and the Upper East Side, with many sought after 1920s homes and home of the MiMo Historic District, a style of architecture originated in Miami in the 1950s. The northern side of Miami also has notable African American and Caribbean immigrant communities such as Little Haiti, Overtown (home of the Lyric Theater), and Liberty City.
Example Output: What unnotable theater is present in Overtown?

Example Input: Passage: The overcrowded conditions of the library was one of the reasons why the RIBA moved from 9 Conduit Street to larger premises at 66 Portland Place in 1934. The library remained open throughout World War Two and was able to shelter the archives of Modernist architect Adolf Loos during the war.
Example Output:
What was the RIBA Library's fourth address?