Assertion: calendula's leaf | /r/ObjectUse | used medicinally
Facets:
value: in china
type: LOCATION
value: since medieval times
type: TEMPORAL
value: for thousands of years
type: TEMPORAL
value: if not earlier
type: TEMPORAL
Source sentences:
text: Used medicinally since medieval times, if not earlier, the dried leaves of the plant are rich in flavonoids; antioxidants which occur naturally in plants and protect the body from destructive free radicals.
text: Day lily buds, flowers and even young leaves have been eaten and used as medicine in China for thousands of years.