Assertion: sunflower's seed | /r/ObjectUse | used contain about 23% protein
Facets:
value: as a nutritious food
type: PURPOSE
value: as seeds
type: MANNER
value: since ancient times
type: TEMPORAL
Source sentences:
text: Since ancient times, seeds of the plant have been used as a nutritious food and seeds contain about 23% protein as well as essential amino acids in significant amount.