Assertion: jerusalem artichoke's tuber | /r/HasProperty | cultivated by native americans
Facets:
value: prior to european settlement
type: TEMPORAL
value: as an important source of carbohydrates
type: PURPOSE
Source sentences:
text: Prior to European settlement, its tubers were cultivated by Native Americans as an important source of carbohydrates and is still grown by food naturalists today.
text: Native to North America, these naturally sweet tubers were first cultivated by Native Americans and then brought over to areas of Europe and Asia.