PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Biofuels???derived from biological materials such as plants, plant oils, animal fat and microbial byproducts???are gaining popularity worldwide as both energy producers and users seek ways to reduce greenhouse gas emissions, move away from dependence on fossil fuels and invigorate economies through increased use of agricultural products.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nist.gov