Assertion: water chestnut | /r/HasProperty | brought into the u.s.
Facets:
value: as a water garden plant
type: MANNER
value: sometime in the 1800s
type: TEMPORAL
Source sentences:
text: Water Chestnut is native to Europe, Africa, and Asia; it was brought into the U.S. sometime in the 1800s as a water garden plant, and it eventually escaped, thus has become an invasive species in many of the states listed above.