Assertion: artichoke's tuber | /r/ObjectUse | used as a root vegetable
Facets:
Source sentences:
text: Jerusalem artichoke is cultivated widely across the temperate zone for its tuber that is used as a root vegetable.
text: It is also cultivated widely across the temperate zone for its tuber, which is used as a root vegetable.
text: Sunroots are cultivated for its tuber, which is used as a root vegetable.
text: It is also cultivated widely across the temperate zone for its tuber, which is used as a root vegetable.