<http://webisa.webdatacommons.org/265200909>	<http://www.w3.org/ns/prov#value>	"An example of a method of the present invention is a method of treating a subterranean...http://www.google.es/patents/US7475728?utm_source=gb-gplus-sharePatente US7475728 - Treating subterranean formation with treatment fluid containing a base fluid, a viscosifier, a fluid loss control additive, and a degradable bridging agent such as, polysaccharide, a chitin, a chitosan, a protein, a polyester," .
<http://webisa.webdatacommons.org/prov/137300572>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/265200909> .
<http://webisa.webdatacommons.org/265200909>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/265200909>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .