<http://webisa.webdatacommons.org/49681924>	<http://www.w3.org/ns/prov#value>	" contain references to tables or other objects that no longer exist." .
<http://webisa.webdatacommons.org/49681924>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/155507917>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/49681924> .
<http://webisa.webdatacommons.org/49681924>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<postgresql.org> .