Assertion: gallbladder | /r/MadeOf | sludge
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: It may also contain sludge (a thick substance that pollutes the gallbladder and can't be absorbed) or calcium deposits, which can harden and further damage the organ.
text: However, the gallbladder may contain sludge (microscopic particles of materials similar to those in gallstones).
text: The gallbladder usually also contains sludge.