Assertion: fistula's opening | /r/HasProperty | internal
Facets:
Source sentences:
text: Complete fistulas have one internal opening and one opening on the skin.
text: Fistula in ano rarely presents with an external opening in the scrotum.
text: Complete fistulas have one internal opening and one opening on the skin.
text: Complete fistulas have one internal opening and one opening on the skin.
text: Incomplete fistulas have an external opening but don’t attach to anything.