Assertion: endoscope | /r/HasProperty | special viewing instrument
Facets:
Source sentences:
text: Endoscopy is a surgical technique that involves the use of an endoscope, a special viewing instrument that allows a surgeon to see images of the body’s internal structures through very small incisions.
text: Endoscopy is a surgical technique that involves the use of an endoscope, a special viewing instrument that allows a surgeon to see images of the body's internal structures through very small incisions.