About: http://webisa.webdatacommons.org/424902237

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	Density and porosity information may be stored on a computer readable storage medium, such as a hard disk or floppy disk.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com