PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Reassuring?The local water districts, which routinely test our water for everything from Arsenic to Zirconium, report that whatever is lurking in our H2O, be it naturally occurring or some man-made additive, is at "safe levels. [So, there are "safe levels" of Mercury, Lead, and other toxins?
http://www.w3.org/ns/prov#wasQuotedFrom
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