<http://webisa.webdatacommons.org/196118310>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/196118310>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .
<http://webisa.webdatacommons.org/prov/56978991>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/196118310> .
<http://webisa.webdatacommons.org/196118310>	<http://www.w3.org/ns/prov#value>	"The air gap 62 is maintained by virtue of transversely spaced insulating spacer members 64 which are formed of an insulating material, such as asbestos or Synthane." .