Assertion: melatonin | /r/ObjectUse | used for up to 2 years
Facets:
value: safely
type: MANNER
value: in some people
type: LOCATION
value: by some people
type: OTHER
Source sentences:
text: Melatonin has been used safely for up to 2 years in some people.
text: It has been used safely for up to two years by some people.
text: Melatonin has been used safely for up to 2 years in some people.
text: It has been used safely for up to two years.