[Q]: Question: "Who made the system?" Context: "The BeiDou Navigation Satellite System (BDS, simplified Chinese: ; traditional Chinese: ; pinyin: Beidou weixing daohang xitong) is a Chinese satellite navigation system. It consists of two separate satellite constellations a limited test system that has been operating since 2000, and a full-scale global navigation system that is currently under construction." Answer:
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[A]: BeiDou

[Q]: Question: "Where can you find mention of Mary's death?" Context: "The doctrines of the Assumption or Dormition of Mary relate to her death and bodily assumption to Heaven. The Roman Catholic Church has dogmaically defined the doctrine of the Assumption, which was done in 1950 by Pope Pius XII in Munificentissimus Deus. Whether the Virgin Mary died or not is not defined dogmatically, however, although a reference to the death of Mary are made in Munificentissimus Deus. In the Eastern Orthodox Church, the Assumption of the Virgin Mary is believed, and celebrated with her Dormition, where they believe she died." Answer:
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[A]: Pope Pius XII

[Q]: Question: "Which city was first attacked from the air?" Context: "Australia had been shocked by the speedy collapse of British Malaya and Fall of Singapore in which around 15,000 Australian soldiers became prisoners of war. Curtin predicted that the "battle for Australia" would now follow. The Japanese established a major base in the Australian Territory of New Guinea in early 1942. On 19 February, Darwin suffered a devastating air raid, the first time the Australian mainland had been attacked. Over the following 19 months, Australia was attacked from the air almost 100 times." Answer:
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[A]: Darwin

[Q]: Question: "What is the human element involved in data flow?" Context: "Network hardware, software and specifications, as well as the expertise of network management personnel are important in ensuring that data follows the most efficient route, and upstream connections work reliably. A tradeoff between cost and efficiency is possible.[citation needed]" Answer:
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[A]:
expertise of network management personnel