<http://webisa.webdatacommons.org/398989736>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nih.gov> .
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<http://webisa.webdatacommons.org/398989736>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/253835833>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/398989736> .
<http://webisa.webdatacommons.org/398989736>	<http://www.w3.org/ns/prov#value>	"methods such as spermicides or the diaphragm). The other must be the" .