| http://www.w3.org/ns/prov#value | - For purposes of this proposal, these areas are defined as ???the long-term utilization of a resource to produce an energy source/fuel, a chemical, or other commercially useful material??? and includes abundant fossil fuels such as coal, shale oil, etc., renewable energy sources such as those obtained from plant matter, and other non-petroleum or natural gas-related sources such as solar and geothe
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