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 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 (1525–1504 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.

Ex Output:
What device was invented by the ancient Greeks?


Ex Input:
Passage: The origins of the Samoans are closely studied in modern research about Polynesia in various scientific disciplines such as genetics, linguistics and anthropology. Scientific research is ongoing, although a number of different theories exist; including one proposing that the Samoans originated from Austronesian predecessors during the terminal eastward Lapita expansion period from Southeast Asia and Melanesia between 2,500 and 1,500 BCE. The Samoan origins are currently being reassessed due to new scientific evidence and carbon dating findings from 2003 and onwards.

Ex Output:
What scientific disciplines are being used to study where the Austronesian people came from?


Ex Input:
Passage: The release of Apple's iPad tablet computer had a negative impact on Dell and other major PC vendors, as consumers switched away from desktop and laptop PCs. Dell's own mobility division has not managed success with developing smartphones or tablets, whether running Windows or Google Android. The Dell Streak was a failure commercially and critically due to its outdated OS, numerous bugs, and low resolution screen. InfoWorld suggested that Dell and other OEMs saw tablets as a short-term, low-investment opportunity running Google Android, an approach that neglected user interface and failed to gain long term market traction with consumers. Dell has responded by pushing higher-end PCs, such as the XPS line of notebooks, which do not compete with the Apple iPad and Kindle Fire tablets. The growing popularity of smartphones and tablet computers instead of PCs drove Dell's consumer segment to an operating loss in Q3 2012. In December 2012, Dell suffered its first decline in holiday sales in five years, despite the introduction of Windows 8.

Ex Output:

The release of what electronic had a positive impact on Dell?