Assertion: common periwinkle | /r/HasProperty | introduced into north america
Facets:
value: in the 1700s as an ornamental
type: TEMPORAL
value: in the 1800s
type: TEMPORAL
value: from western europe
type: LOCATION
value: at halifax
type: LOCATION
value: in about 1857
type: TEMPORAL
Source sentences:
text: Widespread along the rocky shores of northern Europe, the common periwinkle was introduced into North America at Halifax, Nova Scotia, in about 1857 and has spread as far south as Maryland.
text: Common periwinkles were introduced to North America from Western Europe in the 1800s.
text: Common periwinkle was first introduced into North America in the 1700s as an ornamental.