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.

Ex Input:
Passage: Cardiac rehabilitation benefits many who have experienced myocardial infarction, even if there has been substantial heart damage and resultant left ventricular failure; ideally other medical conditions that could interfere with participation should be managed optimally. It should start soon after discharge from hospital. The program may include lifestyle advice, exercise, social support, as well as recommendations about driving, flying, sport participation, stress management, and sexual intercourse.

Ex Output:
Cardiac rehabilitation is not an option under what circumstances?

Ex Input:
Passage: The Very high-speed Backbone Network Service (vBNS) came on line in April 1995 as part of a National Science Foundation (NSF) sponsored project to provide high-speed interconnection between NSF-sponsored supercomputing centers and select access points in the United States. The network was engineered and operated by MCI Telecommunications under a cooperative agreement with the NSF. By 1998, the vBNS had grown to connect more than 100 universities and research and engineering institutions via 12 national points of presence with DS-3 (45 Mbit/s), OC-3c (155 Mbit/s), and OC-12c (622 Mbit/s) links on an all OC-12c backbone, a substantial engineering feat for that time. The vBNS installed one of the first ever production OC-48c (2.5 Gbit/s) IP links in February 1999 and went on to upgrade the entire backbone to OC-48c.

Ex Output:
What were select locations connected to?

Ex Input:
Passage: Nathan Knorr was appointed as third president of the Watch Tower Bible and Tract Society in 1942. Knorr commissioned a new translation of the Bible, the New World Translation of the Holy Scriptures, the full version of which was released in 1961. He organized large international assemblies, instituted new training programs for members, and expanded missionary activity and branch offices throughout the world. Knorr's presidency was also marked by an increasing use of explicit instructions guiding Witnesses in their lifestyle and conduct, and a greater use of congregational judicial procedures to enforce a strict moral code.

Ex Output:
In what year did Nathan Knorr commission a new translation of the Bible?