About: http://webisa.webdatacommons.org/210756091

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	You can implement the Chart Tools Datasource protocol in order to become a data source provider for your own charts, or other charts.
http://www.w3.org/ns/prov#wasQuotedFrom	google-developers.appspot.com