The problem: Answer a question about this article:
On 6 October 1973, as Jews were observing Yom Kippur, the Egyptian and Syrian armies launched a surprise attack against Israeli forces in the Sinai Peninsula and Golan Heights, that opened the Yom Kippur War. The war ended on 26 October with Israel successfully repelling Egyptian and Syrian forces but having suffered over 2,500 soldiers killed in a war which collectively took 10–35,000 lives in just 20 days. An internal inquiry exonerated the government of responsibility for failures before and during the war, but public anger forced Prime Minister Golda Meir to resign.
When did the Egyptian and Syrian armies launch a surprise attack against Israeli forces?
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The answer: 6 October 1973


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Due to the 1973 spike in oil prices, the economy of Iran was flooded with foreign currency, which caused inflation. By 1974, the economy of Iran was experiencing double digit inflation, and despite many large projects to modernize the country, corruption was rampant and caused large amounts of waste. By 1975 and 1976, an economic recession led to increased unemployment, especially among millions of youth who had migrated to the cities of Iran looking for construction jobs during the boom years of the early 1970s. By the late 1970s, many of these people opposed the Shah's regime and began to organize and join the protests against it.
Why did millions of youth migrate to the urban areas of Iran in the mid 1970s?
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The answer: construction jobs


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The English language has been official in the state of Oklahoma since 2010. The variety of North American English spoken is called Oklahoma English, and this dialect is quite diverse with its uneven blending of features of North Midland, South Midland, and Southern dialects. In 2000, 2,977,187 Oklahomans—92.6% of the resident population five years or older—spoke only English at home, a decrease from 95% in 1990. 238,732 Oklahoma residents reported speaking a language other than English in the 2000 census, about 7.4% of the total population of the state. Spanish is the second most commonly spoken language in the state, with 141,060 speakers counted in 2000. The next most commonly spoken language is Cherokee, with about 22,000 speakers living within the Cherokee Nation tribal jurisdiction area of eastern Oklahoma. Cherokee is an official language in the Cherokee Nation tribal jurisdiction area and in the United Keetoowah Band of Cherokee Indians.
What percent of Oklahomans speak only English at home, as of 2000?
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The answer: 92.6%


The problem: Answer a question about this article:
Having been capital of a vast pre-Hispanic empire, and also the capital of richest viceroyalty within the Spanish Empire (ruling over a vast territory in the Americas and Spanish West Indies), and, finally, the capital of the United Mexican States, Mexico City has a rich history of artistic expression. Since the mesoamerican pre-Classical period the inhabitants of the settlements around Lake Texcoco produced many works of art and complex craftsmanship, some of which are today displayed at the world-renowned National Museum of Anthropology and the Templo Mayor museum. While many pieces of pottery and stone-engraving have survived, the great majority of the Amerindian iconography was destroyed during the Conquest of Mexico.
What are the main artifacts that have survived? 
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The answer:
pottery and stone-engraving