About: http://webisa.webdatacommons.org/369960596

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	Exchange updates the checkpoint file every thirty seconds, and its header is viewable except during the moment when an update is occurring.
http://www.w3.org/ns/prov#wasQuotedFrom	microsoft.com