PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • According to statistics from the most recent National Survey on Drug Use and Health, about 7 percent of Americans ages 35 to 49 and more than 9 percent of those ages 50 to 59 reported use of a drug other than marijuana sometime in the past year. -------people who occasionally use drugs like cocaine, amphetamines and opiates over the course of their lives are more common than anyone might suspect -
http://www.w3.org/ns/prov#wasQuotedFrom
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