About: http://webisa.webdatacommons.org/27984811

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 visual or audio signal may indicate when the electrical signals from the heart reach a certain level, e.g. a level indicating an imminent escape beat.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca