<http://webisa.webdatacommons.org/161920927>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<netlib.org> .
<http://webisa.webdatacommons.org/prov/420295971>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/161920927> .
<http://webisa.webdatacommons.org/161920927>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/161920927>	<http://www.w3.org/ns/prov#value>	"system is a recursive retrieval with either of two popular" .