<http://webisa.webdatacommons.org/420983949>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nrc.gov> .
<http://webisa.webdatacommons.org/420983949>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/478096387>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/420983949> .
<http://webisa.webdatacommons.org/420983949>	<http://www.w3.org/ns/prov#value>	" certification, there was a continuing process of upgrading" .