About: http://webisa.webdatacommons.org/14718776

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	Examples of naturally occurring porous media include sand, soil, and some types of stone, such as pumice and sandstone.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com