About: http://webisa.webdatacommons.org/40655358

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	An incision 68 is made in tissue, such as heart tissue adjacent to a heart valve, and blades 12, 14, and 16 placed in incision with the retractor closed as illustrated in FIGS. 1 or 2.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr