About: http://webisa.webdatacommons.org/297630240

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 buttons appear next to certain types of messages, so if someone sends you a calendar invite, for example, a button will show up on top of the email line that lets you RSVP or decline the invitation.
http://www.w3.org/ns/prov#wasQuotedFrom	techspot.com