<http://webisa.webdatacommons.org/104360780>	<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/104360780> .
<http://webisa.webdatacommons.org/104360780>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/104360780>	<http://www.w3.org/ns/prov#value>	"For materials which are particularly water-sensitive or air-sensitive, it may also be desirable to place a moisture- and air-impermeable sheet on the bottom of the device, the sheet being either permanently attached or capable of being peeled off." .