Assertion: mastiff | /r/CapableOf | become rare
Facets:
value: increasingly
type: DEGREE
value: in both the united states
type: LOCATION
value: in canada
type: LOCATION
Source sentences:
text: In the latter decades of the 1800’s, the Mastiff became increasingly rare in both the United States and Canada, and was virtually extinct in those countries by the end of World War I.