Assertion: brain aneurysm | /r/CreatedBy | weakness
Facets:
value: in the blood vessels
type: LOCATION
value: in some cases
type: OTHER
Source sentences:
text: Brain aneurysms are caused by a weakness in the walls of blood vessels in the brain.
text: Brain aneurysms are caused by a weakness in the wall of an artery or vein within the brain.
text: Cerebral aneurysm is a common disorder caused by a weakness in the wall of a brain artery.
text: In some cases, brain aneurysms are caused by weaknesses in the blood vessels present from birth.