Assertion: water chestnut | /r/HasProperty | introduced in mid-1800
Facets:
value: as an ornamental plant
type: MANNER
value: for ornamental use in ponds
type: PURPOSE
Source sentences:
text: It is believed that water chestnut was introduced in the mid-1800s for ornamental use in ponds.
text: It was introduced in the United States in the mid-1800' as an ornamental plant.