<http://webisa.webdatacommons.org/140769721>	<http://www.w3.org/ns/prov#value>	"Optionally a cushioning layer 20 of closed cell foam such as Poron or other elastomeric material can also be present." .
<http://webisa.webdatacommons.org/prov/297273764>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/140769721> .
<http://webisa.webdatacommons.org/140769721>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/140769721>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .