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After the Rus' attack on Constantinople in 860, the Byzantine Patriarch Photius sent missionaries north to convert the Rus' and the Slavs. Prince Rastislav of Moravia had requested the Emperor to provide teachers to interpret the holy scriptures, so in 863 the brothers Cyril and Methodius were sent as missionaries, due to their knowledge of the Slavonic language. The Slavs had no written language, so the brothers devised the Glagolitic alphabet, later developed into Cyrillic, and standardized the language of the Slavs, later known as Old Church Slavonic. They translated portions of the Bible and drafted the first Slavic civil code and other documents, and the language and texts spread throughout Slavic territories, including Kievan Rus'. The mission of Cyril and Methodius served both evangelical and diplomatic purposes, spreading Byzantine cultural influence in support of imperial foreign policy. In 867 the Patriarch announced that the Rus' had accepted a bishop, and in 874 he speaks of an "Archbishop of the Rus'."
What year did Rus accept a pope?
A: unanswerable

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The annual United States Open Tennis Championships is one of the world's four Grand Slam tennis tournaments and is held at the National Tennis Center in Flushing Meadows-Corona Park, Queens. The New York Marathon is one of the world's largest, and the 20042006 events hold the top three places in the marathons with the largest number of finishers, including 37,866 finishers in 2006. The Millrose Games is an annual track and field meet whose featured event is the Wanamaker Mile. Boxing is also a prominent part of the city's sporting scene, with events like the Amateur Boxing Golden Gloves being held at Madison Square Garden each year. The city is also considered the host of the Belmont Stakes, the last, longest and oldest of horse racing's Triple Crown races, held just over the city's border at Belmont Park on the first or second Sunday of June. The city also hosted the 1932 U.S. Open golf tournament and the 1930 and 1939 PGA Championships, and has been host city for both events several times, most notably for nearby Winged Foot Golf Club.
What tennis Grand Slam event is held at the National Tennis Center?
A: United States Open Tennis Championships

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Avoidance of triggers is a key component of improving control and preventing attacks. The most common triggers include allergens, smoke (tobacco and other), air pollution, non selective beta-blockers, and sulfite-containing foods. Cigarette smoking and second-hand smoke (passive smoke) may reduce the effectiveness of medications such as corticosteroids. Laws that limit smoking decrease the number of people hospitalized for asthma. Dust mite control measures, including air filtration, chemicals to kill mites, vacuuming, mattress covers and others methods had no effect on asthma symptoms. Overall, exercise is beneficial in people with stable asthma. Yoga could provide small improvements in quality of life and symptoms in people with asthma.
What do sulfite-containing foods reduce the effectiveness of?
A: unanswerable

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Greece has the largest merchant navy in the world, accounting for more than 15% of the world's total deadweight tonnage (dwt) according to the United Nations Conference on Trade and Development. The Greek merchant navy's total dwt of nearly 245 million is comparable only to Japan's, which is ranked second with almost 224 million. Additionally, Greece represents 39.52% of all of the European Union's dwt. However, today's fleet roster is smaller than an all-time high of 5,000 ships in the late 1970s.
What percentage of the entire EU's dwt does Greece alone represent?
A:
39.52%