[Q]: Extract the answer to the question from the following context. Question: A 2D shape with four equal straight sides and four right angles is called? Context: On July 16, 1989, the Popular Front of Azerbaijan held its first congress and elected Abulfaz Elchibey, who would become President, as its Chairman. On August 19, 600,000 protesters jammed Baku's Lenin Square (now Azadliq Square) to demand the release of political prisoners. In the second half of 1989, weapons were handed out in Nagorno-Karabakh. When Karabakhis got hold of small arms to replace hunting rifles and crossbows, casualties began to mount; bridges were blown up, roads were blockaded, and hostages were taken.
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[A]: Square

[Q]: Extract the answer to the question from the following context. Question: Who did NOT write a paper with "Natural Means of Selection" in the title? Context: Darwin was hard at work on his "big book" on Natural Selection, when on 18 June 1858 he received a parcel from Wallace, who stayed on the Maluku Islands (Ternate and Gilolo). It enclosed twenty pages describing an evolutionary mechanism, a response to Darwin's recent encouragement, with a request to send it on to Lyell if Darwin thought it worthwhile. The mechanism was similar to Darwin's own theory. Darwin wrote to Lyell that "your words have come true with a vengeance, ... forestalled" and he would "of course, at once write and offer to send [it] to any journal" that Wallace chose, adding that "all my originality, whatever it may amount to, will be smashed". Lyell and Hooker agreed that a joint publication putting together Wallace's pages with extracts from Darwin's 1844 Essay and his 1857 letter to Gray should be presented at the Linnean Society, and on 1 July 1858, the papers entitled On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection, by Wallace and Darwin respectively, were read out but drew little reaction. While Darwin considered Wallace's idea to be identical to his concept of natural selection, historians have pointed out differences. Darwin described natural selection as being analogous to the artificial selection practised by animal breeders, and emphasised competition between individuals; Wallace drew no comparison to selective breeding, and focused on ecological pressures that kept different varieties adapted to local conditions. Some historians have suggested that Wallace was actually discussing group selection rather than selection acting on individual variation.
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[A]: Wallace

[Q]: Extract the answer to the question from the following context. Question: Which came first, Executive Order 11246 or the year 1961? Context: Ideas for affirmative action came as early as the Reconstruction Era (1865-1877) in which a former slave population lacked the skills and resources for sustainable living. In 1865, General William Tecumseh Sherman proposed to divide the land and goods from Georgia and grant it to families of color which became the "Forty acres and a mule" policy. The proposal was never widely adopted due to strong political opposition. Nearly a century later (1950s-1960s), policies to assist classes of individuals reemerged during the Civil Rights Movement. The civil rights guarantees came through the interpretation of the Equal Protection Clause of the 14th Amendment. The decisions came to be known as affirmative action in which mandatory, as well as voluntary programs, affirmed the civil rights of people of color. Furthermore, these affirmative action programs protected people of color from the present effects stemming from past discrimination. In 1961, President John F. Kennedy became the first to utilize the term "affirmative action" in Executive Order 10925 to ensure that government contractors "take affirmative action to ensure that applicants are employed, and employees are treated during employment, without regard to their race, creed, color, or national origin." This executive order realized the government's intent to create equal opportunities for all qualified people. This executive order was eventually amended and superseded by Lyndon B. Johnson's Executive Order 11246 which prevented discrimination based on race, color, religion, and national origin by organizations which received federal contracts and subcontracts. In 1967, the order was amended to include sex as well. The Reagan administration was opposed to the affirmative action requirements of Executive Order 11246, but these contemplated changes[which?] faced bi-partisan opposition in Congress.
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[A]: 1961

[Q]: Extract the answer to the question from the following context. Question: What does the third "S" in "MANPADS" refer to? Context: NATO defines anti-aircraft warfare (AAW) as "measures taken to defend a maritime force against attacks by airborne weapons launched from aircraft, ships, submarines and land-based sites." In some armies the term All-Arms Air Defence (AAAD) is used for air defence by non-specialist troops. Other terms from the late 20th century include GBAD (Ground Based AD) with related terms SHORAD (Short Range AD) and MANPADS ("Man Portable AD Systems": typically shoulder-launched missiles). Anti-aircraft missiles are variously called surface-to-air missile, abbreviated and pronounced "SAM" and Surface to Air Guided Weapon (SAGW).
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[A]:
Systems