About: http://webisa.webdatacommons.org/290302705

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	Meanwhile, the QTend interval is the time interval between the beginning of the QRS complex and the end point of the T-wave, i.e. the point at which the slope of the T-wave following its peak becomes substantially flat.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com