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: The thalidomide tragedy resurrected Kefauver's bill to enhance drug regulation that had stalled in Congress, and the Kefauver-Harris Amendment became law on 10 October 1962. Manufacturers henceforth had to prove to FDA that their drugs were effective as well as safe before they could go on the US market. The FDA received authority to regulate advertising of prescription drugs and to establish good manufacturing practices. The law required that all drugs introduced between 1938 and 1962 had to be effective. An FDA - National Academy of Sciences collaborative study showed that nearly 40 percent of these products were not effective. A similarly comprehensive study of over-the-counter products began ten years later.

Ex Output:
When did the FDA Amendment become a law?


Ex Input:
Passage: The war had removed Bermuda's primary trading partners, the American colonies, from the empire, and dealt a harsh blow to Bermuda's merchant shipping trade. This also suffered due to the deforestation of Bermuda, as well as the advent of metal ships and steam propulsion, for which it did not have raw materials. During the course of the following War of 1812, the primary market for Bermuda's salt disappeared as the Americans developed their own sources. Control of the Turks had passed to the Bahamas in 1819.

Ex Output:
What was the primary market for Bermuda following the War of 1812?


Ex Input:
Passage: Concerning humanity as the image of Christ, English Dominican spirituality concentrated on the moral implications of image-bearing rather than the philosophical foundations of the imago Dei. The process of Christ's life, and the process of image-bearing, amends humanity to God's image. The idea of the "image of God" demonstrates both the ability of man to move toward God (as partakers in Christ's redeeming sacrifice), and that, on some level, man is always an image of God. As their love and knowledge of God grows and is sanctified by faith and experience, the image of God within man becomes ever more bright and clear.

Ex Output:

What did French Dominican spirituality concentrate on?