About: http://webisa.webdatacommons.org/443607299

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 term ???porosity??? is used herein to mean a percentage of an area of a surface area that is composed of open space, e.g., a pore, hole, channel or other opening, in a sheet, nozzle, filter or other material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca