[Q]: Extract the answer to the question from the following context. Question: Did more people vote for Barack Obama in the 2008 Presidential primary election or Joe Biden? Context: In the Presidential primary elections of February 5, 2008, Sen. Clinton won 61.2% of the Bronx's 148,636 Democratic votes against 37.8% for Barack Obama and 1.0% for the other four candidates combined (John Edwards, Dennis Kucinich, Bill Richardson and Joe Biden). On the same day, John McCain won 54.4% of the borough's 5,643 Republican votes, Mitt Romney 20.8%, Mike Huckabee 8.2%, Ron Paul 7.4%, Rudy Giuliani 5.6%, and the other candidates (Fred Thompson, Duncan Hunter and Alan Keyes) 3.6% between them.
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[A]: Barack Obama

[Q]: Extract the answer to the question from the following context. Question: Who was the Democratic candidate in 1984? Context: The junior U.S. Senator from Massachusetts, Paul Tsongas, announced in 1984 that he would be stepping down for health reasons. Kerry ran, and as in his 1982 race for Lieutenant Governor, he did not receive the endorsement of the party regulars at the state Democratic convention. Congressman James Shannon, a favorite of House Speaker Tip O'Neill, was the early favorite to win the nomination, and he "won broad establishment support and led in early polling." Again as in 1982, however, Kerry prevailed in a close primary.
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[A]: Kerry

[Q]: Extract the answer to the question from the following context. Question: Of the rarest types of shapes for bacteria, which would likely be a much more rigid and stable shape in an environment? Context: Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kokkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators.
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[A]: tetrahedral

[Q]: Extract the answer to the question from the following context. Question: When did Nikolai Vavilov cease to exist? Context: The discipline of plant ecology was pioneered in the late 19th century by botanists such as Eugenius Warming, who produced the hypothesis that plants form communities, and his mentor and successor Christen C. Raunkir whose system for describing plant life forms is still in use today. The concept that the composition of plant communities such as temperate broadleaf forest changes by a process of ecological succession was developed by Henry Chandler Cowles, Arthur Tansley and Frederic Clements. Clements is credited with the idea of climax vegetation as the most complex vegetation that an environment can support and Tansley introduced the concept of ecosystems to biology. Building on the extensive earlier work of Alphonse de Candolle, Nikolai Vavilov (18871943) produced accounts of the biogeography, centres of origin, and evolutionary history of economic plants.
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[A]:
1943