About: http://webisa.webdatacommons.org/171969558

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 manipulating step may also perform optimizations, such as defragmenting system or user files or structures, and freeing up space that is unnecessarily marked as being used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com