Instructions: 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: 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.
Output:
What TV show served as inspiration for WABAC's name?