<http://webisa.webdatacommons.org/49130978>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<boost.org> .
<http://webisa.webdatacommons.org/prov/326046998>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/49130978> .
<http://webisa.webdatacommons.org/49130978>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/49130978>	<http://www.w3.org/ns/prov#value>	"set of types defined by a traits class." .