Assertion: mastiff's people | /r/CapableOf | use mastiff
Facets:
value: for centuries
type: TEMPORAL
value: as guard dog on farms
type: TRANSITIVE-OBJECT
Source sentences:
text: When the Romans left Britain, people used Mastiffs as guard dog on farms and to watch over livestock.
text: Tibetan people have used mastiffs guard their flocks of sheep from predators, like wolves, for centuries.