<http://webisa.webdatacommons.org/prov/129846006>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/153414202> .
<http://webisa.webdatacommons.org/153414202>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/153414202>	<http://www.w3.org/ns/prov#value>	"Preferably, a metal surface to be treated according to the invention is first cleaned of any contaminants, particularly organic contaminants and foreign metal fines and/or inclusions." .
<http://webisa.webdatacommons.org/153414202>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .