About: http://webisa.webdatacommons.org/453649609

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	Artificial joints of the human body, including in particular knee and hip joints, have been available for 50 years or more and have been the subject of intense development for at least the last 20 years.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com