About: http://webisa.webdatacommons.org/116895154

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 SA node sends electrical impulses at a certain rate, but your heart rate may still be altered by physical demands, stress, or other factors.
http://www.w3.org/ns/prov#wasQuotedFrom	texasheart.org