<http://webisa.webdatacommons.org/224481005>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/224481005>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<washingtonpost.com> .
<http://webisa.webdatacommons.org/prov/484629482>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/224481005> .
<http://webisa.webdatacommons.org/224481005>	<http://www.w3.org/ns/prov#value>	"The system tracks thousands of news media, academic, governmental and other sources." .