<http://webisa.webdatacommons.org/prov/422942749>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/250417372> .
<http://webisa.webdatacommons.org/250417372>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/250417372>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/317817698>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/250417372> .
<http://webisa.webdatacommons.org/250417372>	<http://www.w3.org/ns/prov#value>	"At each server and for each service there is an undo operation provided by the designer of the service." .