Assertion: narcolepsy | /r/CreatedBy | traumatic brain injury
Facets:
value: in rare cases
type: OTHER
value: sometimes
type: TEMPORAL
Source sentences:
text: Narcolepsy can sometimes be caused by a traumatic brain injury, brain tumor, or diseases like multiple sclerosis, or encephalitis which affect the brain.
text: In rare cases, narcolepsy can be caused by traumatic brain injury, tumors, or other diseases affecting the parts of the brain that regulate wakefulness or REM sleep.  
text: In rare cases, narcolepsy can be caused by traumatic brain injury, tumors, or other diseases affecting the parts of the brain that regulate wakefulness or REM sleep.