PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Insomnia is a lack of healthful, restful sleep and is a common problem experienced by as many as 20% to 30% of American adults at various times in their lives.
http://www.w3.org/ns/prov#wasQuotedFrom
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