Please answer this: Question: "what word is in quotation?" Context: "Classical statistical mechanics requires the existence of h (but does not define its value). Eventually, following upon Planck's discovery, it was recognized that physical action cannot take on an arbitrary value. Instead, it must be some multiple of a very small quantity, the "quantum of action", now called the Planck constant. Classical physics cannot explain this fact. In many cases, such as for monochromatic light or for atoms, this quantum of action also implies that only certain energy levels are allowed, and values in between are forbidden." Answer:
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Answer: quantum of action

Please answer this: Question: "What train line is the Northeast Regional?" Context: "Union Station is further served by four Amtrak lines: the Northeast Regional and the high-speed Acela Express provide service to New York, Washington, D.C. and Boston, and rank as the first and second busiest routes in the country; the New HavenSpringfield Line provides service to Hartford and Springfield, Massachusetts; and the Vermonter provides service to both Washington, D.C., and Vermont, 15 miles (24 km) from the Canadian border. Amtrak also codeshares with United Airlines for travel to any airport serviced by United Airlines, via Newark Airport (EWR) originating from or terminating at Union Station, (IATA: ZVE)." Answer:
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Answer: Amtrak

Please answer this: Question: "What number does one get when one adds all the salaries and then divides that number by the number of salaries added?" Context: "In January 2007, the average annual salary in the city was 22,267. This was 1,700 lower than the national average and 3,800 less than the average for the South East." Answer:
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Answer:
the average