In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.
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Question: Alexander Henderson (1780 – 1863) was a Scottish physician and author. Born in Aberdeenshire, he was educated at Edinburgh University, where he graduated as a doctor of medicine in 1803. He went to London and was admitted a licentiate of the Royal College of Physicians in 1808. He chiefly devoted himself to letters, though, contributing to such works as "Encyclopædia Britannica" and "Edinburgh Review". He translated Cabanis's "Coup d'œil sur les révolutions et la réforme de la médicine" (1804) as "Sketch of the revolutions of medical science, and views relating to its reform" (1806). He published "The History of Ancient and Modern Wines" in 1824. Question: Alexander Henderson contributed to which compendium, written by about 100 full-time editors and 4,000 contributors at current? Answer: Encyclopædia Britannica

Answer:  He chiefly devoted himself to letters, though, contributing to such works as Encyclopædia Britannica and Edinburgh Review.


Question: The B46 bus route constitutes a public transit corridor in Brooklyn, New York City, United States. The route runs primarily along Utica Avenue north from the Kings Plaza shopping center through Eastern Brooklyn, with continued service west along Broadway to the Williamsburg Bridge Plaza Bus Terminal. The corridor was originally served by a streetcar line, known as the Utica and Reid Avenues Line, Utica−Reid Line, Reid−Utica Line, Reid Avenue Line, or Utica Avenue Line until 1951, when the line was replaced by bus service. The bus route is operated by MTA Regional Bus Operations under the New York City Transit brand. Question: What year did the shopping center the B46 bus route runs north of open? Answer: 1970

Answer: The B46 bus route constitutes a public transit corridor in Brooklyn, New York City, United States.


Question: In pre-Roman Gaul the Belgic tribe of the Veliocasses or Velocasses controlled a large area in the lower Seine valley, which retains a trace of their name, as the Vexin. According to Julius Caesar' "Commentary on the Gallic Wars" the Veliocasses participated in the tribal coalition of the Belgae that resisted the Romans in 57 BCE. In 52 they raised 3000 men to support Vercingetorix, and fought alongside the Bellovaci in the final rebellion against Roman hegemony. Question: In pre-Roman Gaul the Belgic tribe of the Veliocasses or Velocasses controlled a large area in the lower Seine valley, which retains a trace of their name, as the Vexin, in 52 they raised 3000 men to support which son of Celtillus the Avernian, leader of the Gallic tribes? Answer: Vercingetorix

Answer:
 In 52 they raised 3000 men to support Vercingetorix, and fought alongside the Bellovaci in the final rebellion against Roman hegemony.