PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • prominent method used by adolescents, and Jordan, the Philippines and Turkey (10???14%), where withdrawal is the most common method.
http://www.w3.org/ns/prov#wasQuotedFrom
  • guttmacher.org