About: http://webisa.webdatacommons.org/417436164

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	In short, to preserve the state of an activity, you could always implement the onPause() event, and then use your own ways to preserve the state of your activity, such as using a database, internal or external file storage, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net