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.

Passage: In Ancient Greece, green and blue were sometimes considered the same color, and the same word sometimes described the color of the sea and the color of trees. The philosopher Democritus described two different greens; cloron, or pale green, and prasinon, or leek green. Aristotle considered that green was located midway between black, symbolizing the earth, and white, symbolizing water. However, green was not counted among of the four classic colors of Greek painting; red, yellow, black and white, and is rarely found in Greek art.
How many blues did Democritus describe?

Passage: The three brothersRurik, Sineus, and Truvorestablished themselves in Novgorod, Beloozero, and Izborsk, respectively. Two of the brothers died, and Rurik became the sole ruler of the territory and progenitor of the Rurik Dynasty. A short time later, two of Rurik's men, Askold and Dir, asked him for permission to go to Tsargrad (Constantinople). On their way south, they discovered "a small city on a hill," Kiev, captured it and the surrounding country from the Khazars, populated the region with more Varangians, and "established their dominion over the country of the Polyanians."
What were the names of the three sisters that ruled Novgorod, Beloozero, and Izborsk?

Passage: Others have rejected that the doctrine of Immaculate Conception exists in Islam, the Quranic account does not confirm the Immaculate Conception exclusively for Mary as in Islam every human child is born pure and immaculate, her sinless birth is thus independent of the Christian docrtrine of original sin as no such doctrine exists in Islam. Moreover, Hannah's prayer in the Quran for her child to remain protected from Satan (Shaytan) was said after it had already been born, not before and expresses a natural concern any righteous parent would have. The Muslim tradition or hadith, which states that the only children born without the "touch of Satan," were Mary and Jesus. should therefore not be taken in isolation from the Quran, and is to be interpreted within the specific context of exonerating Mary and her child from the charges that were made against them and is not a general statement. The specific mention of Mary and Jesus in this hadith may also be taken to represent a class of people, in keeping with the Arabic language and the Quranic verse [O Satan] surely thou shalt have no power over My servants, except such of the erring ones as choose to follow thee (15:42)
How does the Qurn confirm the Immaculat Conception of Mary?