Assertion: calendula's flower | /r/ObjectUse | used as medicine
Facets:
value: in china
type: LOCATION
value: for thousands of years
type: TEMPORAL
value: for centuries
type: TEMPORAL
Source sentences:
text: The golden yellow flowers of Calendula officinalis have been used as medicine for centuries.
text: Day lily buds, flowers and even young leaves have been eaten and used as medicine in China for thousands of years.