<http://webisa.webdatacommons.org/146483605> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/146483605> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.es> . <http://webisa.webdatacommons.org/prov/301573980> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/146483605> . <http://webisa.webdatacommons.org/146483605> <http://www.w3.org/ns/prov#value> "Foam density pertains to the weight per unit volume of a washed foam free of emulsifiers, fillers, surface treatments such as salts, and the like." . <http://webisa.webdatacommons.org/prov/287496416> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/146483605> .