Assertion: house sparrow | /r/HasProperty | introduced in north america
Facets:
value: in the 1850s
type: TEMPORAL
value: in new york
type: LOCATION
Source sentences:
text: It was introduced in North America in 1851 and have since become very common.
text: Introduced to North American in New York in the 1850s, house sparrows are now abundant across the continent.