Assertion: narcolepsy | /r/CreatedBy | the loss of a chemical
Facets:
Source sentences:
text: Narcolepsy with cataplexy is caused by the loss of a chemical in the brain called hypocretin.
text: Narcolepsy with cataplexy, which is the name for muscle paralysis, is caused by the loss of a chemical in the brain called hypocretin.