Classifier Instance:

Anchor text: Fuel cell
Target Entity: Fuel_cell
Preceding Context: Natural gas is a major source of electricity generation through the use of gas turbines and steam turbines. Most grid peaking power plants and some off-grid engine-generators use natural gas. Particularly high efficiencies can be achieved through combining gas turbines with a steam turbine in combined cycle mode. Natural gas burns more cleanly than other hydrocarbon fuels, such as oil and coal, and produces less carbon dioxide per unit of energy released. For an equivalent amount of heat, burning natural gas produces about 30% less carbon dioxide than burning petroleum and about 45% less than burning coal. Combined cycle power generation using natural gas is thus the cleanest source of power available using hydrocarbon fuels, and this technology is widely used wherever gas can be obtained at a reasonable cost.
Succeeding Context: technology may eventually provide cleaner options for converting natural gas into electricity, but as yet it is not price-competitive.
Paragraph Title: Power generation
Source Page: Natural gas

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