<http://webisa.webdatacommons.org/20070366>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/20070366>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.co.uk> .
<http://webisa.webdatacommons.org/prov/478812629>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/20070366> .
<http://webisa.webdatacommons.org/20070366>	<http://www.w3.org/ns/prov#value>	"Another operation which could occur is that an author, such as principal 1, determines to delete the document to which principals 2 and 3 have attached properties." .