The problem: Answer a question about this article:
The transition from the mandolino to the mandolin began around 1744 with the designing of the metal-string mandolin by the Vinaccia family, 3 brass strings and one of gut, using friction tuning pegs on a fingerboard that sat "flush" with the sound table. The mandolin grew in popularity over the next 60 years, in the streets where it was used by young men courting and by street musicians, and in the concert hall. After the Napoleonic Wars of 1815, however, its popularity began to fall. The 19th century produced some prominent players, including Bartolomeo Bortolazzi of Venice and Pietro Vimercati. However, professional virtuosity was in decline, and the mandolin music changed as the mandolin became a folk instrument; "the large repertoire of notated instrumental music for the mandolino and the mandoline was completely forgotten". The export market for mandolins from Italy dried up around 1815, and when Carmine de Laurentiis wrote a mandolin method in 1874, the Music World magazine wrote that the mandolin was "out of date." Salvador Leonardi mentioned this decline in his 1921 book, Methode pour Banjoline ou Mandoline-Banjo, saying that the mandolin had been declining in popularity from previous times.
Who were two of the promiment players in the 19th century?
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The answer: Bartolomeo Bortolazzi of Venice and Pietro Vimercati

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The Russian alphabet has many systems of character encoding. KOI8-R was designed by the Soviet government and was intended to serve as the standard encoding. This encoding was and still is widely used in UNIX-like operating systems. Nevertheless, the spread of MS-DOS and OS/2 (IBM866), traditional Macintosh (ISO/IEC 8859-5) and Microsoft Windows (CP1251) created chaos and ended by establishing different encodings as de facto standards, with Windows-1251 becoming a de facto standard in Russian Internet and e-mail communication during the period of roughly 19952005.
Who created KOI8-R encoding?
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The answer: the Soviet government

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In December 1978, Gaddafi stepped down as Secretary-General of the GPC, announcing his new focus on revolutionary rather than governmental activities; this was part of his new emphasis on separating the apparatus of the revolution from the government. Although no longer in a formal governmental post, he adopted the title of "Leader of the Revolution" and continued as commander-in-chief of the armed forces. He continued exerting considerable influence over Libya, with many critics insisting that the structure of Libya's direct democracy gave him "the freedom to manipulate outcomes".
In what year did Gaddafi resign from his position in the GPC?
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The answer: 1978

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Elizabeth's personal fortune has been the subject of speculation for many years. Jock Colville, who was her former private secretary and a director of her bank, Coutts, estimated her wealth in 1971 at 2 million (equivalent to about 25 million today). In 1993, Buckingham Palace called estimates of 100 million "grossly overstated". She inherited an estimated 70 million estate from her mother in 2002. The Sunday Times Rich List 2015 estimated her private wealth at 340 million, making her the 302nd richest person in the UK.
What has been a subject of speculation concerning Elizabeth's wealth?
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The answer:
personal fortune