Assertion: gas flare | /r/ObjectUse | used in petroleum refineries
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Source sentences:
text: A gas flare, alternatively known as a flare stack, is a gas combustion device used in industrial plants such as petroleum refineries, chemical plants and natural gas processing plants.
text: A gas flare, alternatively known as a flare stack, is a gas combustion device used in industrial plants such as petroleum refineries, chemical plants, and natural gas processing plants, and at oil or gas production sites with oil wells, gas wells, offshore oil and gas rigs, and landfills.