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: 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.
Example Output: When did the FDA Amendment become a law?

Example Input: Passage: Several states have never had capital punishment, the first being Michigan, which abolished it shortly after entering the Union. (However, the United States government executed Tony Chebatoris at the Federal Correctional Institution in Milan, Michigan in 1938.) Article 4, Section 46 of Michigan's fourth Constitution (ratified in 1963; effective in 1964) prohibits any law providing for the penalty of death. Attempts to change the provision have failed. In 2004, a constitutional amendment proposed to allow capital punishment in some circumstances failed to make it on the November ballot after a resolution failed in the legislature and a public initiative failed to gather enough signatures.
Example Output: What happened in 1935?

Example Input: Passage: The name Wayback Machine was chosen as a droll reference to a plot device in an animated cartoon series, The Rocky and Bullwinkle Show. In one of the animated cartoon's component segments, Peabody's Improbable History, lead characters Mr. Peabody and Sherman routinely used a time machine called the "WABAC machine" (pronounced way-back) to witness, participate in, and, more often than not, alter famous events in history.
Example Output:
What TV show served as inspiration for WABAC's name?