About: http://webisa.webdatacommons.org/50954145

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	A heartbeat message is a message sent over a link to a component on a regular basis to determine whether that component and link are still alive.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com