<http://webisa.webdatacommons.org/181992421>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/181992421>	<http://www.w3.org/ns/prov#value>	"However, it is necessary to use such material as to block penetration of oxygen and moisture to the utmost." .
<http://webisa.webdatacommons.org/181992421>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/59925573>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/181992421> .