PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Click here to enlarge image [+] But in the early 1990s, when the FDA approved the drug, abuse of opioids such as heroin and morphine often was done by addicts who injected the drugs.
http://www.w3.org/ns/prov#wasQuotedFrom
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