| http://www.w3.org/ns/prov#value | - The trouble is, food is a commodity, an ingredient, and a meal, and its value can be measured at every stage along that chain. ???If you look at it as the output from the farm sector, it???s sold and processed, and sold again,??? says Mark Gehlhar, a senior economist at the U.S. Department of Agriculture. ???Then you have flour being produced and dough being produced.
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