<http://webisa.webdatacommons.org/166542966>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/257528667>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/166542966> .
<http://webisa.webdatacommons.org/166542966>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<loc.gov> .
<http://webisa.webdatacommons.org/166542966>	<http://www.w3.org/ns/prov#value>	"This experiment was a matter of serious" .