Assertion: gas's amount | /r/CapableOf | release the gas
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text: The amount of fresh water used in fracking a single shale gas well varies greatly, depending on the size of the well and the amount of fracturing that has to be done to release the gas: industry and regulatory sources give figures that range from approximately 7.5 million to 20 million litres (2 million to 5 million gallons)—roughly equivalent to the water contained in three to eight Olympic-size swimming pools.