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: Since World War II, aircraft carrier designs have increased in size to accommodate a steady increase in aircraft size. The large, modern Nimitz class of US carriers has a displacement nearly four times that of the World War II–era USS Enterprise, yet its complement of aircraft is roughly the same—a consequence of the steadily increasing size and weight of military aircraft over the years. Today's aircraft carriers are so expensive that nations which operate them risk significant political, economic, and military impact if a carrier is lost, or even used in conflict.
Example Output: Why have aircraft carriers increased in size since World War I?

Example Input: Passage: The eleven prefecture-level divisions of Zhejiang are subdivided into 90 county-level divisions (36 districts, 20 county-level cities, 33 counties, and one autonomous county). Those are in turn divided into 1,570 township-level divisions (761 towns, 505 townships, 14 ethnic townships, and 290 subdistricts). Hengdian belongs to Jinhua, which is the largest base of shooting films and TV dramas in China. Hengdian is called "China's Hollywood".
Example Output: How many unprefecture-level divisions of Zhejiang are there?

Example Input: Passage: In 2004 he was admitted as knight of the Légion d'honneur by president Jacques Chirac. On July 15, 2006, Spielberg was also awarded the Gold Hugo Lifetime Achievement Award at the Summer Gala of the Chicago International Film Festival, and also was awarded a Kennedy Center honour on December 3. The tribute to Spielberg featured a short, filmed biography narrated by Tom Hanks and included thank-yous from World War II veterans for Saving Private Ryan, as well as a performance of the finale to Leonard Bernstein's Candide, conducted by John Williams (Spielberg's frequent composer).[citation needed]
Example Output:
In what year did Jacques Chirac become president?