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: The Cadet Organizations Administration and Training Service (COATS) consists of officers and non-commissioned members who conduct training, safety, supervision and administration of nearly 60,000 cadets aged 12 to 18 years in the Canadian Cadet Movement. The majority of members in COATS are officers of the Cadet Instructors Cadre (CIC) branch of the CAF. Members of the Reserve Force Sub-Component COATS who are not employed part-time (Class A) or full-time (Class B) may be held on the "Cadet Instructor Supplementary Staff List" (CISS List) in anticipation of employment in the same manner as other reservists are held as members of the Supplementary Reserve.

Output: Who conducts formation of the cadets?

Input: Consider Input: Passage: The most precise timekeeping device of the ancient world was the water clock, or clepsydra, one of which was found in the tomb of Egyptian pharaoh Amenhotep I (15251504 BC). They could be used to measure the hours even at night, but required manual upkeep to replenish the flow of water. The Ancient Greeks and the people from Chaldea (southeastern Mesopotamia) regularly maintained timekeeping records as an essential part of their astronomical observations. Arab inventors and engineers in particular made improvements on the use of water clocks up to the Middle Ages. In the 11th century, Chinese inventors and engineers invented the first mechanical clocks driven by an escapement mechanism.

Output: What device was invented by the ancient Greeks?

Input: Consider Input: Passage: The word ale comes from Old English ealu (plural ealo), in turn from Proto-Germanic *alu (plural *alu), ultimately from the Proto-Indo-European base *helut-, which holds connotations of "sorcery, magic, possession, intoxication". The word beer comes from Old English beor, from Proto-Germanic *beuza, probably from Proto-Indo-European *beusom, originally "brewer's yeast, beer dregs", although other theories have been provided connecting the word with Old English beow, "barley", or Latin bibere, "to drink". On the currency of two words for the same thing in the Germanic languages, the 12th-century Old Icelandic poem Alvissmal says, "Ale it is called among men, but among the gods, beer."
Output: What is the plural of the word ale?