<http://webisa.webdatacommons.org/37615598>	<http://www.w3.org/ns/prov#value>	"no articles on whether blacks could sing opera or bluegrass." .
<http://webisa.webdatacommons.org/37615598>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/37615598>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<prorev.com> .
<http://webisa.webdatacommons.org/prov/221342689>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/37615598> .