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: Even though some proofs of complexity-theoretic theorems regularly assume some concrete choice of input encoding, one tries to keep the discussion abstract enough to be independent of the choice of encoding. This can be achieved by ensuring that different representations can be transformed into each other efficiently.
[EX A]: What can not be achieved by ensuring different representations can transformed into each other efficiently?

[EX Q]: Passage: Esoteric or Sufi interpretation attempts to unveil the inner meanings of the Quran. Sufism moves beyond the apparent (zahir) point of the verses and instead relates Quranic verses to the inner or esoteric (batin) and metaphysical dimensions of consciousness and existence. According to Sands, esoteric interpretations are more suggestive than declarative, they are allusions (isharat) rather than explanations (tafsir). They indicate possibilities as much as they demonstrate the insights of each writer.
[EX A]: What is another term for Sufi Quranic misinterpretation?

[EX Q]: Passage: Everton were relegated to the Second Division two years later during internal turmoil at the club. However, the club was promoted at the first attempt scoring a record number of goals in the second division. On return to the top flight in 1931–32, Everton wasted no time in reaffirming their status and won a fourth League title at the first opportunity. Everton also won their second FA Cup in 1933 with a 3–0 win against Manchester City in the final. The era ended in 1938–39 with a fifth League title.
[EX A]:
What was the record number of goals Everton had that promoted the team?