Assertion: american bullfrog | /r/AtLocation | canada
Facets:
value: east of the rocky mountains
type: LOCATION
Source sentences:
text: The American bullfrog is native to the United States, Canada and Mexico, east of the Rocky Mountains.
text: The American bullfrog is native to the United States, Canada and Mexico, east of the Rocky Mountains.
text: It is native to the eastern United States and Canada.