About: http://webisa.webdatacommons.org/231339258

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	Measured variously by echocardiogram, cardiac catherization, during a cardiac stress test or other diagnostic testing, a normal ejection fraction is usually 50 to 70 percent of the ventricular volume.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com