PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Pathogens Source: sewage discharges and farm runoff can introduce E. coli bacteria, cryptosporidium, and other harmful microorganisms.
http://www.w3.org/ns/prov#wasQuotedFrom
  • waterfilters.com