PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The vast majority of today???s hydrogen is produced via steam reformation of natural gas (95% in the US, roughly 48% globally), but alternative sources such as biogas are growing in popularity.
http://www.w3.org/ns/prov#wasQuotedFrom
  • eai.in