Problem: Westminster Abbey:

The Pyx Chamber formed the undercroft of the monks' dormitory. It dates to the late 11th century and was used as a monastic and royal treasury. The outer walls and circular piers are of 11th-century date, several of the capitals were enriched in the 12th century and the stone altar added in the 13th century. The term pyx refers to the boxwood chest in which coins were held and presented to a jury during the Trial of the Pyx, in which newly minted coins were presented to ensure they conformed to the required standards.

When were oldly minted coins presented to ensure they met standards?
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A: unanswerable


Problem: At the end of the Second World War, Canada possessed the fourth-largest air force and fifth-largest naval surface fleet in the world, as well as the largest volunteer army ever fielded. Conscription for overseas service was introduced only near the end of the war, and only 2,400 conscripts actually made it into battle. Originally, Canada was thought to have had the third-largest navy in the world, but with the fall of the Soviet Union, new data based on Japanese and Soviet sources found that to be incorrect.
Which other country had a sizable naval army?
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Answer: Japanese


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
There is no scale factor band 21 (sfb21) for frequencies above approx 16 kHz, forcing the encoder to choose between less accurate representation in band 21 or less efficient storage in all bands below band 21, the latter resulting in wasted bitrate in VBR encoding.
What can scale factor band 21 be shortened to?
A: sfb21


Context and question: Since the coronations in 1066 of both King Harold and William the Conqueror, coronations of English and British monarchs were held in the abbey. In 1216, Henry III was unable to be crowned in London when he first came to the throne, because the French prince Louis had taken control of the city, and so the king was crowned in Gloucester Cathedral. This coronation was deemed by the Pope to be improper, and a further coronation was held in the abbey on 17 May 1220. The Archbishop of Canterbury is the traditional cleric in the coronation ceremony.[citation needed]
Who had taken control of London when Henry II was to be crowned?
Answer: unanswerable


Question: A general purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by buses, often made of groups of wires.
Is there an answer to this question: The ALU of a computer stands for what?

Answer: arithmetic logic


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The act created the National Military Establishment (renamed Department of Defense in 1949), which was composed of three subordinate Military Departments, namely the Department of the Army, the Department of the Navy, and the newly created Department of the Air Force. Prior to 1947, the responsibility for military aviation was shared between the Army (for land-based operations), the Navy (for sea-based operations from aircraft carriers and amphibious aircraft), and the Marine Corps (for close air support of infantry operations). The 1940s proved to be important in other ways as well. In 1947, Captain Chuck Yeager broke the sound barrier in his X-1 rocket-powered aircraft, beginning a new era of aeronautics in America.
What does the US Navy's responsibilities include?
A:
sea-based operations from aircraft carriers and amphibious aircraft