Assertion: parent's teen | /r/HasProperty | the go to sleep
Facets:
value: to be tired
type: PURPOSE
Source sentences:
text: tired and lethargic (teens tend to be tired anyway because their bodies don’t release melatonin, the ‘go to sleep’ hormone, until much later than in adults, but because teens need also to be early up for school, they often fall short of the required 9 hours.