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 Q]: Passage: Code points in the range U+D800–U+DBFF (1,024 code points) are known as high-surrogate code points, and code points in the range U+DC00–U+DFFF (1,024 code points) are known as low-surrogate code points. A high-surrogate code point (also known as a leading surrogate) followed by a low-surrogate code point (also known as a trailing surrogate) together form a surrogate pair used in UTF-16 to represent 1,048,576 code points outside BMP. High and low surrogate code points are not valid by themselves. Thus the range of code points that are available for use as characters is U+0000–U+D7FF and U+E000–U+10FFFF (1,112,064 code points). The value of these code points (i.e., excluding surrogates) is sometimes referred to as the character's scalar value.
[EX A]: What is a low-surrogate followed by a high-surrogate called?

[EX Q]: Passage: Infrared reflectography (fr; it; es), as called by art conservators, can be applied to paintings to reveal underlying layers in a completely non-destructive manner, in particular the underdrawing or outline drawn by the artist as a guide. This often reveals the artist's use of carbon black, which shows up well in reflectograms, as long as it has not also been used in the ground underlying the whole painting. Art conservators are looking to see whether the visible layers of paint differ from the underdrawing or layers in between – such alterations are called pentimenti when made by the original artist. This is very useful information in deciding whether a painting is the prime version by the original artist or a copy, and whether it has been altered by over-enthusiastic restoration work. In general, the more pentimenti the more likely a painting is to be the prime version. It also gives useful insights into working practices.
[EX A]: What painting technique is used to reveal working practices?

[EX Q]: Passage: Louis XVI translated the Reflections "from end to end" into French. Fellow Whig MPs Richard Sheridan and Charles James Fox, disagreed with Burke and split with him. Fox thought the Reflections to be "in very bad taste" and "favouring Tory principles". Other Whigs such as the Duke of Portland and Earl Fitzwilliam privately agreed with Burke, but did not wish for a public breach with their Whig colleagues. Burke wrote on 29 November 1790: "I have received from the Duke of Portland, Lord Fitzwilliam, the Duke of Devonshire, Lord John Cavendish, Montagu (Frederick Montagu MP), and a long et cetera of the old Stamina of the Whiggs a most full approbation of the principles of that work and a kind indulgence to the execution". The Duke of Portland said in 1791 that when anyone criticised the Reflections to him, he informed them that he had recommended the book to his sons as containing the true Whig creed.
[EX A]:
What did Charles James Fox translate?