input: Please answer the following: Extract the answer to the question from the following context. Question: The plow of a tram connects to what to power the tram? Context: Some street trams (streetcars) used conduit third-rail current collection. The third rail was below street level. The tram picked up the current through a plough (U.S. "plow") accessed through a narrow slot in the road. In the United States, much (though not all) of the former streetcar system in Washington, D.C. (discontinued in 1962) was operated in this manner to avoid the unsightly wires and poles associated with electric traction. The same was true with Manhattan's former streetcar system. The evidence of this mode of running can still be seen on the track down the slope on the northern access to the abandoned Kingsway Tramway Subway in central London, United Kingdom, where the slot between the running rails is clearly visible, and on P and Q Streets west of Wisconsin Avenue in the Georgetown neighborhood of Washington DC, where the abandoned tracks have not been paved over. The slot can easily be confused with the similar looking slot for cable trams/cars (in some cases, the conduit slot was originally a cable slot). The disadvantage of conduit collection included much higher initial installation costs, higher maintenance costs, and problems with leaves and snow getting in the slot. For this reason, in Washington, D.C. cars on some lines converted to overhead wire on leaving the city center, a worker in a "plough pit" disconnecting the plough while another raised the trolley pole (hitherto hooked down to the roof) to the overhead wire. In New York City for the same reasons of cost and operating efficiency outside of Manhattan overhead wire was used. A similar system of changeover from conduit to overhead wire was also used on the London tramways, notably on the southern side; a typical changeover point was at Norwood, where the conduit snaked sideways from between the running rails, to provide a park for detached shoes or ploughs.
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output: third rail
Please answer this: Extract the answer to the question from the following context. Question: Where should the brewery tap be with respect to the brewery? Context: A brewery tap is the nearest outlet for a brewery's beers. This is usually a room or bar in the brewery itself, though the name may be applied to the nearest pub. The term is not applied to a brewpub which brews and sells its beer on the same premises.
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Answer: nearest
Problem: Extract the answer to the question from the following context. Question: What has been the primary goal of the food industry? Context: Since the Industrial Revolution some two hundred years ago, the food processing industry has invented many technologies that both help keep foods fresh longer and alter the fresh state of food as they appear in nature. Cooling is the primary technology used to maintain freshness, whereas many more technologies have been invented to allow foods to last longer without becoming spoiled. These latter technologies include pasteurisation, autoclavation, drying, salting, and separation of various components, all of which appearing to alter the original nutritional contents of food. Pasteurisation and autoclavation (heating techniques) have no doubt improved the safety of many common foods, preventing epidemics of bacterial infection. But some of the (new) food processing technologies have downfalls as well.

A: maintain freshness
Problem: Given the question: Extract the answer to the question from the following context. Question: The Soviet Union came about as a result of the Russian revolutionary war, but by what event was this instance already concluded? Context: The first half of the 20th century in Russia and the Soviet Union was marked by a succession of wars, famines and other disasters, each accompanied by large-scale population losses. Stephen J. Lee estimates that, by the end of World War II in 1945, the Russian population was about 90 million fewer than it could have been otherwise.
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The answer is:
World War II
input question: Extract the answer to the question from the following context. Question: What power was in place before those who wanted to establish Hindavi? Context: The post-Mughal era was dominated by the rise of the Maratha suzerainty as other small regional states (mostly late Mughal tributary states) emerged, and also by the increasing activities of European powers. There is no doubt that the single most important power to emerge in the long twilight of the Mughal dynasty was the Maratha confederacy. The Maratha kingdom was founded and consolidated by Chatrapati Shivaji, a Maratha aristocrat of the Bhonsle clan who was determined to establish Hindavi Swarajya. Sir J.N. Sarkar described Shivaji as "the last great constructive genius and nation builder that the Hindu race has produced". However, the credit for making the Marathas formidable power nationally goes to Peshwa Bajirao I. Historian K.K. Datta wrote about Bajirao I:???
output answer: the Mughal dynasty
input question: Extract the answer to the question from the following context. Question: What do religious people practice? Context: A non-Greek origin of Apollo has long been assumed in scholarship. The name of Apollo's mother Leto has Lydian origin, and she was worshipped on the coasts of Asia Minor. The inspiration oracular cult was probably introduced into Greece from Anatolia, which is the origin of Sibyl, and where existed some of the oldest oracular shrines. Omens, symbols, purifications, and exorcisms appear in old Assyro-Babylonian texts, and these rituals were spread into the empire of the Hittites. In a Hittite text is mentioned that the king invited a Babylonian priestess for a certain "purification".???
output answer:
rituals