Assertion: mastiff's ancestor | /r/ObjectUse | used as guardian
Facets:
value: for the native people
type: TRANSITIVE-OBJECT
value: for their food reserves
type: PURPOSE
Source sentences:
text: The ancestors of this breed were used as guardians for the native people and for their food reserves, but when the English migrants arrived on the islands in the 18th century and brought their own bull terriers and bulldogs, the Canary Mastiff resulted from the crossbreeding between the native breed and the western breeds.