Assertion: melatonin | /r/CapableOf | improve the quality of sleep
Facets:
Source sentences:
text: Melatonin also may improve the quality of sleep and reduce daytime sleepiness and fatigue.
text: Multiple clinical trials suggest that melatonin can reduce the time it takes to fall asleep, increase total sleep time and improve quality of sleep.
text: Melatonin also may improve the quality of sleep and reduce daytime sleepiness and fatigue.