Assertion: melatonin's effect | /r/HasProperty | unclear
Facets:
Source sentences:
text: Some studies suggest that the hormone can improve mild cognitive impairment, although researchers emphasize that the effect is unclear and that melatonin isn't a "cure" for full-blown Alzheimer's disease.﻿﻿
text: This can be associated with persistent sleepiness, but the other effects are unclear.
text: This can be associated with persistent sleepiness, but the other effects are unclear.