About: http://webisa.webdatacommons.org/290849831

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	Age-related Changes: Men older than 65 and women older than 75are prone to developing calcium and other types of deposits on their heart valves which stiffen and thicken the valve flaps, limiting blood flow through the valve.
http://www.w3.org/ns/prov#wasQuotedFrom	ministryhealth.org