Problem: In May 2013, Thein Sein became the first Myanmar president to visit the White House in 47 years; the last Burmese leader to visit the White House was Ne Win in September 1966. President Barack Obama praised the former general for political and economic reforms, and the cessation of tensions between Myanmar and the United States. Political activists objected to the visit due to concerns over human rights abuses in Myanmar but Obama assured Thein Sein that Myanmar will receive US support. The two leaders discussed to release more political prisoners, the institutionalisation of political reform and rule of law, and ending ethnic conflict in Myanmarthe two governments agreed to sign a bilateral trade and investment framework agreement on 21 May 2013.
Who is the first official Burmese delegate to visit the white house following the 2010 elections in Burma ?
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Answer: Thein Sein became the first Myanmar president to visit the White House in 47 years

Problem: Thuringia became a landgraviate in 1130 AD. After the extinction of the reigning Ludowingian line of counts and landgraves in 1247 and the War of the Thuringian Succession (12471264), the western half became independent under the name of "Hesse", never to become a part of Thuringia again. Most of the remaining Thuringia came under the rule of the Wettin dynasty of the nearby Margraviate of Meissen, the nucleus of the later Electorate and Kingdom of Saxony. With the division of the house of Wettin in 1485, Thuringia went to the senior Ernestine branch of the family, which subsequently subdivided the area into a number of smaller states, according to the Saxon tradition of dividing inheritance amongst male heirs. These were the "Saxon duchies", consisting, among others, of the states of Saxe-Weimar, Saxe-Eisenach, Saxe-Jena, Saxe-Meiningen, Saxe-Altenburg, Saxe-Coburg, and Saxe-Gotha; Thuringia became merely a geographical concept.
When did the eastern half of the state become Hesse?
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Answer: unanswerable

Problem: The Japanese launch was followed in March 1983 by the introduction of CD players and discs to Europe and North America (where CBS Records released sixteen titles). This event is often seen as the "Big Bang" of the digital audio revolution. The new audio disc was enthusiastically received, especially in the early-adopting classical music and audiophile communities, and its handling quality received particular praise. As the price of players gradually came down, and with the introduction of the portable Walkman the CD began to gain popularity in the larger popular and rock music markets. The first artist to sell a million copies on CD was Dire Straits, with their 1985 album Brothers in Arms. The first major artist to have his entire catalogue converted to CD was David Bowie, whose 15 studio albums were made available by RCA Records in February 1985, along with four greatest hits albums. In 1988, 400 million CDs were manufactured by 50 pressing plants around the world.
How many studio albums did David Bowie release in February 1985?
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Answer:
15