About: http://webisa.webdatacommons.org/155737182

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The rigid core and branched structure are chosen so that no amount of thermal, mechanical or other force may adequately create accessible free space for diffusion.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com