The problem: Answer a question about this article:
There are two major sports centers in Nanjing, Wutaishan Sports Center and Nanjing Olympic Sports Center. Both of these two are comprehensive sports centers, including stadium, gymnasium, natatorium, tennis court, etc. Wutaishan Sports Center was established in 1952 and it was one of the oldest and most advanced stadiums in early time of People's Republic of China.
What is special about Wutaishan Sports Center, from a historical perspective?
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The answer: it was one of the oldest and most advanced stadiums in early time of People's Republic of China.

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Botany originated in prehistory as herbalism with the efforts of early humans to identify and later cultivate edible, medicinal and poisonous plants, making it one of the oldest branches of science. Medieval physic gardens, often attached to monasteries, contained plants of medical importance. They were forerunners of the first botanical gardens attached to universities, founded from the 1540s onwards. One of the earliest was the Padua botanical garden. These gardens facilitated the academic study of plants. Efforts to catalogue and describe their collections were the beginnings of plant taxonomy, and led in 1753 to the binomial system of Carl Linnaeus that remains in use to this day.
What science led to botany?
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The answer: herbalism

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After the creation of the Commonwealth of Australia in 1901, Norfolk Island was placed under the authority of the new Commonwealth government to be administered as an external territory. During World War II, the island became a key airbase and refuelling depot between Australia and New Zealand, and New Zealand and the Solomon Islands. The airstrip was constructed by Australian, New Zealand and United States servicemen during 1942. Since Norfolk Island fell within New Zealand's area of responsibility it was garrisoned by a New Zealand Army unit known as N Force at a large Army camp which had the capacity to house a 1,500 strong force. N Force relieved a company of the Second Australian Imperial Force. The island proved too remote to come under attack during the war and N Force left the island in February 1944.
During what major event did Norfolk Island become an important airbase and refuelling station?
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The answer: World War II

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The single "Killer Queen" from Sheer Heart Attack reached number two on the British charts, and became their first US hit, reaching number 12 on the Billboard Hot 100. It combines camp, vaudeville, and British music hall with May's guitar virtuosity. The album's second single, "Now I'm Here", a more traditional hard rock composition, was a number eleven hit in Britain, while the high speed rocker "Stone Cold Crazy" featuring May's uptempo riffs is a precursor to speed metal. In recent years, the album has received acclaim from music publications: In 2006, Classic Rock ranked it number 28 in "The 100 Greatest British Rock Albums Ever", and in 2007, Mojo ranked it No.88 in "The 100 Records That Changed the World". It is also the second of three Queen albums to feature in the book 1001 Albums You Must Hear Before You Die.
Killer Queen reached what number on the Billboard Hot 100?
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The answer:
12