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.

[Q]: Passage: The use of alloys by humans started with the use of meteoric iron, a naturally occurring alloy of nickel and iron. It is the main constituent of iron meteorites which occasionally fall down on Earth from outer space. As no metallurgic processes were used to separate iron from nickel, the alloy was used as it was. Meteoric iron could be forged from a red heat to make objects such as tools, weapons, and nails. In many cultures it was shaped by cold hammering into knives and arrowheads. They were often used as anvils. Meteoric iron was very rare and valuable, and difficult for ancient people to work.
[A]: What was the first man-made alloy used by humans?


[Q]: Passage: Since about the year 2000, a growing number of Internet pharmacies have been established worldwide. Many of these pharmacies are similar to community pharmacies, and in fact, many of them are actually operated by brick-and-mortar community pharmacies that serve consumers online and those that walk in their door. The primary difference is the method by which the medications are requested and received. Some customers consider this to be more convenient and private method rather than traveling to a community drugstore where another customer might overhear about the drugs that they take. Internet pharmacies (also known as online pharmacies) are also recommended to some patients by their physicians if they are homebound.
[A]: When did internet pharmacies begin to end?


[Q]: Passage: The entire Protestant canon of scripture is considered the inspired, inerrant word of God. Jehovah's Witnesses consider the Bible to be scientifically and historically accurate and reliable and interpret much of it literally, but accept parts of it as symbolic. They consider the Bible to be the final authority for all their beliefs, although sociologist Andrew Holden's ethnographic study of the religion concluded that pronouncements of the Governing Body, through Watch Tower Society publications, carry almost as much weight as the Bible. Regular personal Bible reading is frequently recommended; Witnesses are discouraged from formulating doctrines and "private ideas" reached through Bible research independent of Watch Tower Society publications, and are cautioned against reading other religious literature. Adherents are told to have "complete confidence" in the leadership, avoid skepticism about what is taught in the Watch Tower Society's literature, and "not advocate or insist on personal opinions or harbor private ideas when it comes to Bible understanding." The religion makes no provision for members to criticize or contribute to official teachings and all Witnesses must abide by its doctrines and organizational requirements.
[A]:
 Who is the outside foremost authority on Jehovah's Witnesses?