Assertion: sleep apnea's cause | /r/HasProperty | the relaxation of muscles
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: There are a few different kinds of sleep apnea, of which are rooted in the cause of the breathing disruption: sometimes, the cause is the relaxation of muscles in the throat, while at others, it’s the brain’s failure to signify muscle contraction.