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Igor returned to Kiev keen for revenge. He assembled a large force of warriors from among neighboring Slavs and Pecheneg allies, and sent for reinforcements of Varangians from "beyond the sea." In 944 the Rus' force advanced again on the Greeks, by land and sea, and a Byzantine force from Cherson responded. The Emperor sent gifts and offered tribute in lieu of war, and the Rus' accepted. Envoys were sent between the Rus', the Byzantines, and the Bulgarians in 945, and a peace treaty was completed. The agreement again focused on trade, but this time with terms less favorable to the Rus', including stringent regulations on the conduct of Rus' merchants in Cherson and Constantinople and specific punishments for violations of the law. The Byzantines may have been motivated to enter the treaty out of concern of a prolonged alliance of the Rus', Pechenegs, and Bulgarians against them, though the more favorable terms further suggest a shift in power.
What year did the Rus defeat the Byzantines the the Bulgarians?
A: unanswerable

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Mary had been venerated since Early Christianity, and is considered by millions to be the most meritorious saint of the religion. The Eastern and Oriental Orthodox, Roman Catholic, Anglican, and Lutheran Churches believe that Mary, as Mother of Jesus, is the Mother of God and the Theotokos, literally "Giver of birth to God". There is significant diversity in the Marian beliefs and devotional practices of major Christian traditions. The Roman Catholic Church holds distinctive Marian dogmas; namely her status as the mother of God; her Immaculate Conception; her perpetual virginity; and her Assumption into heaven. Many Protestants minimize Mary's role within Christianity, based on the argued brevity of biblical references. Mary (Maryam) also has a revered position in Islam, where a whole chapter of the Qur'an is devoted to her, also describing the birth of Jesus.
What is the basis for Mary's diminished role in Protestantism?
A: brevity of biblical references

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Before the 1997 war, about 9,000 Europeans and other non-Africans lived in Congo, most of whom were French; only a fraction of this number remains. Around 300 American expatriates reside in the Congo.
How many Congolese expatriates live in America?
A: unanswerable

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The luxurious and ornate representative texts of Serbo-Croatian Church Slavonic belong to the later era, when they coexisted with the Serbo-Croatian vernacular literature. The most notable are the "Missal of Duke Novak" from the Lika region in northwestern Croatia (1368), "Evangel from Reims" (1395, named after the town of its final destination), Hrvoje's Missal from Bosnia and Split in Dalmatia (1404), and the first printed book in Serbo-Croatian, the Glagolitic Missale Romanum Glagolitice (1483).
What town was the Missal of Duke Novak named after?
A:
unanswerable