About: http://webisa.webdatacommons.org/220847248

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	Many of these damaged valves have to be replaced in order for the patient to live a normal life, since the strain on their heart would otherwise cause such symptoms as chest pain, fatigue, shortness of breath, and fluid retention.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca