PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In particular, nitrates and phosphates added to aquatic systems can often cause microorganisms such as algae to undergo a population explosion.
http://www.w3.org/ns/prov#wasQuotedFrom
  • epa.gov