PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • While filtration was a fairly effective treatment method for reducing turbidity, disinfectants such as chlorine played the largest role in reducing the number of waterborne disease outbreaks in the early 1900s. ??? Related books and articles
http://www.w3.org/ns/prov#wasQuotedFrom
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