Assertion: hemlock | /r/AtLocation | north america
Facets:
value: as an ornamental plant
type: PURPOSE
value: in the 1800s
type: TEMPORAL
Source sentences:
text: Poison hemlock is native to Europe and North Africa and has been introduced to Asia, North America, and Australia.
text: Hemlock is native to Europe and western Asia and was introduced into North America as an ornamental plant.
text: It was introduced to North America in the 1800s as an ornamental plant.