<http://webisa.webdatacommons.org/prov/155551077>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/241880852> .
<http://webisa.webdatacommons.org/prov/394409004>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/241880852> .
<http://webisa.webdatacommons.org/241880852>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/241880852>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/241880852>	<http://www.w3.org/ns/prov#value>	"factors such as family income and education levels.) But when teacher unions" .