About: http://webisa.webdatacommons.org/447268050

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	I think part of our problem is that og_notifications, notifications, and messaging are all pretty broken and didn't let you unsubscribe from content types in groups.
http://www.w3.org/ns/prov#wasQuotedFrom	drupal.org