About: http://webisa.webdatacommons.org/327450176

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	When one of these valves becomes severely diseased and causes symptoms such as shortness of breath or heart failure it is usually repaired or replaced (with an artificial valve, also known as prosthetic valve).
http://www.w3.org/ns/prov#wasQuotedFrom	seemyheart.org