Assertion: cardiomyopathy's cause | /r/HasProperty | unclear
Facets:
value: in most cases
type: TEMPORAL
Source sentences:
text: The exact cause of broken heart syndrome is unclear.
text: This happens very rarely and the exact cause is still unclear.
text: The underlying cause is unclear.
text: The cause of DCM is unclear in most cases, but certain breeds appear to have an inherited predisposition.