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: In manufacturing the glass bulb, a type of "ribbon machine" is used. A continuous ribbon of glass is passed along a conveyor belt, heated in a furnace, and then blown by precisely aligned air nozzles through holes in the conveyor belt into molds. Thus the glass bulbs are created. After the bulbs are blown, and cooled, they are cut off the ribbon machine; a typical machine of this sort produces 50,000 bulbs per hour. The filament and its supports are assembled on a glass stem, which is fused to the bulb. The air is pumped out of the bulb, and the evacuation tube in the stem press is sealed by a flame. The bulb is then inserted into the lamp base, and the whole assembly tested.

Ex Output:
What type of machine is not used in manufacturing light bulbs?

Ex Input:
Passage: In many cases of diarrhea, replacing lost fluid and salts is the only treatment needed. This is usually by mouth oral rehydration therapy or, in severe cases, intravenously. Diet restrictions such as the BRAT diet are no longer recommended. Research does not support the limiting of milk to children as doing so has no effect on duration of diarrhea. To the contrary, WHO recommends that children with diarrhea continue to eat as sufficient nutrients are usually still absorbed to support continued growth and weight gain, and that continuing to eat also speeds up recovery of normal intestinal functioning. CDC recommends that children and adults with cholera also continue to eat.

Ex Output:
What treatment do people in oral rehydration therapy need?

Ex Input:
Passage: On 25 February 1757, Burke signed a contract with Robert Dodsley to write a "history of England from the time of Julius Caesar to the end of the reign of Queen Anne", its length being eighty quarto sheets (640 pages), nearly 400,000 words. It was to be submitted for publication by Christmas 1758. Burke completed the work to the year 1216 and stopped; it was not published until after Burke's death, being included in an 1812 collection of his works, entitled An Essay Towards an Abridgement of the English History. G. M. Young did not value Burke's history and claimed that it was "demonstrably a translation from the French". Lord Acton, on commenting on the story that Burke stopped his history because David Hume published his, said "it is ever to be regretted that the reverse did not occur".

Ex Output:
What is the name of David Hume's history?