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<http://webisa.webdatacommons.org/284135114>	<http://www.w3.org/ns/prov#value>	"The porous surface components have been made of various materials including metals, ceramics, and polymers." .
<http://webisa.webdatacommons.org/284135114>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/44773414>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/284135114> .