PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • With regard to trona (Na2CO3.NaHCO3.2H2O), high-purity trona is commonly used to make soda ash, which is used in the production of glass, paper and other goods.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es