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.

Input: Consider 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.

Output: What did terrorism respond to?


Input: Consider Input: Passage: In March 1968, CBS and Sony formed CBS/Sony Records, a Japanese business joint venture. With Sony being one of the developers behind the compact disc digital music media, a compact disc production plant was constructed in Japan under the joint venture, allowing CBS to begin supplying some of the first compact disc releases for the American market in 1983.

Output: In March 1988, CBS and Sony formed what group?


Input: Consider Input: Passage: Northwestern was founded in 1851 by John Evans, for whom the City of Evanston is named, and eight other lawyers, businessmen and Methodist leaders. Its founding purpose was to serve the Northwest Territory, an area that today includes the states of Ohio, Indiana, Illinois, Michigan, Wisconsin and parts of Minnesota. Instruction began in 1855; women were admitted in 1869. Today, the main campus is a 240-acre (97 ha) parcel in Evanston, along the shores of Lake Michigan just 12 miles north of downtown Chicago. The university's law, medical, and professional schools are located on a 25-acre (10 ha) campus in Chicago's Streeterville neighborhood. In 2008, the university opened a campus in Education City, Doha, Qatar with programs in journalism and communication.


Output: Who rejected Northwestern University?