| http://www.w3.org/ns/prov#value | - But the mandate also requires the production of advanced biofuels, including cellulosic ethanol, made from wood chips, switchgrass and other fibrous materials.Although a few cellulosic ethanol plants have been built, very little of the new fuel is expected to be available to refiners when corn-based ethanol volumes are capped in about 2017.As the National Academies of Sciences reported in 2011, ??
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