| http://www.w3.org/ns/prov#value | - Examples are subsidies to encourage the sale of exports; subsidies on some foods to keep down the cost of living, especially in urban areas; and subsidies to encourage the expansion of farm production and achieve self-reliance in food production ??? ??? ??? Subsurface Mining Extraction of a metal ore or fuel resource such as coal from a deep underground deposit ??? ??? ??? Surface Mining Removing
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