About: http://webisa.webdatacommons.org/203516362

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	This prevents lacerations and other injuries to the patient and surgeon, and also allows for the smooth entry and exit of the retractor from any opening.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr