Assertion: narcolepsy's cause | /r/HasProperty | insufficient sleep
Facets:
Source sentences:
text: The doctor will rule out obvious causes of sleepiness: insufficient sleep, sedating medications, or problems with the timing of sleep, such as staying up too late.
text: The doctor will rule out obvious causes of sleepiness: insufficient sleep, sedating medications, or problems with the timing of sleep, such as staying up too late.