PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Sources of problematic methane emissions include landfills, digesters, oil & gas fields, coal mining operations, chemical plants, refineries and other industrial processes.
http://www.w3.org/ns/prov#wasQuotedFrom
  • techconnectworld.com