<http://webisa.webdatacommons.org/296981539>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/prov/394571837>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/296981539> .
<http://webisa.webdatacommons.org/prov/135148349>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/296981539> .
<http://webisa.webdatacommons.org/296981539>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/296981539>	<http://www.w3.org/ns/prov#value>	"The relational calculus, like any calculus, deals with a high-level description or specification of a desired result, without naming any operations, procedures, or other method for obtaining the result." .