The problem: Answer a question about this article:
Eisenhower was the last president born in the 19th century, and at age 62, was the oldest man elected President since James Buchanan in 1856 (President Truman stood at 64 in 1948 as the incumbent president at the time of his election four years earlier). Eisenhower was the only general to serve as President in the 20th century and the most recent President to have never held elected office prior to the Presidency (The other Presidents who did not have prior elected office were Zachary Taylor, Ulysses S. Grant, William Howard Taft and Herbert Hoover).
How old was Truman in 1948?
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The answer: 64

The problem: Answer a question about this article:
As the European population was severely reduced, land became more plentiful for the survivors, and labour consequently more expensive. Attempts by landowners to forcibly reduce wages, such as the English 1351 Statute of Laborers, were doomed to fail. These efforts resulted in nothing more than fostering resentment among the peasantry, leading to rebellions such as the French Jacquerie in 1358 and the English Peasants' Revolt in 1381. The long-term effect was the virtual end of serfdom in Western Europe. In Eastern Europe, on the other hand, landowners were able to exploit the situation to force the peasantry into even more repressive bondage.
In what year was the Statute of Laborers enacted?
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The answer: 1351

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There were a number of avenues to upward social mobility and the achievement of nobility. Poland's nobility was not a rigidly exclusive, closed class. Many low-born individuals, including townsfolk, peasants and Jews, could and did rise to official ennoblement in Polish society. Each szlachcic had enormous influence over the country's politics, in some ways even greater than that enjoyed by the citizens of modern democratic countries. Between 1652 and 1791, any nobleman could nullify all the proceedings of a given sejm (Commonwealth parliament) or sejmik (Commonwealth local parliament) by exercising his individual right of liberum veto (Latin for "I do not allow"), except in the case of a confederated sejm or confederated sejmik.
What is is called to nullify proceedings?
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The answer: liberum veto

The problem: Answer a question about this article:
Boston has been a noted religious center from its earliest days. The Roman Catholic Archdiocese of Boston serves nearly 300 parishes and is based in the Cathedral of the Holy Cross (1875) in the South End, while the Episcopal Diocese of Massachusetts, with the Cathedral Church of St. Paul (1819) as its episcopal seat, serves just under 200 congregations. Unitarian Universalism has its headquarters on Beacon Hill. The Christian Scientists are headquartered in Back Bay at the Mother Church (1894). The oldest church in Boston is First Church in Boston, founded in 1630. King's Chapel, the city's first Anglican church, was founded in 1686 and converted to Unitarianism in 1785. Other churches include Christ Church (better known as Old North Church, 1723), the oldest church building in the city, Trinity Church (1733), Park Street Church (1809), Old South Church (1874), Jubilee Christian Church and Basilica and Shrine of Our Lady of Perpetual Help on Mission Hill (1878).
Where is the headquarters for the Christial Scientists?
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The answer:
Back Bay