Please answer this: Extract the answer to the question from the following context. Question: When did Bell open up his latest deaf facility Context: Unsure of his future, he first contemplated returning to London to complete his studies, but decided to return to Boston as a teacher. His father helped him set up his private practice by contacting Gardiner Greene Hubbard, the president of the Clarke School for the Deaf for a recommendation. Teaching his father's system, in October 1872, Alexander Bell opened his "School of Vocal Physiology and Mechanics of Speech" in Boston, which attracted a large number of deaf pupils, with his first class numbering 30 students. While he was working as a private tutor, one of his most famous pupils was Helen Keller, who came to him as a young child unable to see, hear, or speak. She was later to say that Bell dedicated his life to the penetration of that "inhuman silence which separates and estranges." In 1893, Keller performed the sod-breaking ceremony for the construction of the new Bell's new Volta Bureau, dedicated to "the increase and diffusion of knowledge relating to the deaf".
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Answer: 1893

Please answer this: Extract the answer to the question from the following context. Question: What was a negative point, not taking into account the central government's grip, of the Qing government's de facto first-line troops before changing their name? Context: First, the Yongying system signaled the end of Manchu dominance in Qing military establishment. Although the Banners and Green Standard armies lingered on as a drain on resources, henceforth the Yongying corps became the Qing government's de facto first-line troops. Second, the Yongying corps were financed through provincial coffers and were led by regional commanders, weakening central government's grip on the whole country. Finally, the nature of Yongying command structure fostered nepotism and cronyism amongst its commanders, who laid the seeds of regional warlordism in the first half of the 20th century.
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Answer: nepotism and cronyism amongst its commanders, who laid the seeds of regional warlordism in the first half of the 20th century

Please answer this: Extract the answer to the question from the following context. Question: What was Lower Manhattan originally? Context: A permanent European presence in New Netherland began in 1624 making New York the 12th oldest continuously occupied European-established settlement in the continental United States with the founding of a Dutch fur trading settlement on Governors Island. In 1625, construction was started on a citadel and a Fort Amsterdam on Manhattan Island, later called New Amsterdam (Nieuw Amsterdam). The colony of New Amsterdam was centered at the site which would eventually become Lower Manhattan. The Dutch colonial Director-General Peter Minuit purchased the island of Manhattan from the Canarsie, a small band of the Lenape, in 1626 for a value of 60 guilders (about $1000 in 2006); a disproved legend says that Manhattan was purchased for $24 worth of glass beads.
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Answer:
a Dutch fur trading settlement on Governors Island