About: http://webisa.webdatacommons.org/18993448

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	If an obstruction such as a stricture, stone or scar tissue is encountered, it can be seen by the operator, thus enabling the operator to know the general nature of the obstruction.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com