PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Covering only the most commonly used chemicals in the most important processes in industry, A Guide to Safe Material and Chemical Handling includes industrial chemicals, such as gases, fuels, and water, which are not incorporated in most comprehensive books on materials and chemical properties.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stanford.edu