About: http://webisa.webdatacommons.org/160998381

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	technique is that by maintaining overwrite reserve equal to the amount of space allocated for the application data, the amount of available space on the volume that can potentially be consumed by snapshots and other data is decreased.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com