Assertion: black stool | /r/CapableOf | indicate problem
Facets:
value: usually
type: TEMPORAL
value: in the intestines
type: LOCATION
Source sentences:
text: Black stools caused by the presence of blood usually indicate a problem in the intestines (the black color is a sign of digested blood), whereas red streaks of blood in stool usually are caused by bleeding in the rectum or anus.