About: http://webisa.webdatacommons.org/93670889

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	Every time there is a new version I have made a backup of my library as it exists at the time... and whenever I have detected a problem I have reverted to a previous version of the library.
http://www.w3.org/ns/prov#wasQuotedFrom	macworld.com