Assertion: mastiff's ancestor | /r/HasProperty | a guard dog
Facets:
value: for villages
type: TRANSITIVE-OBJECT
value: for palaces
type: LOCATION
value: historically
type: TEMPORAL
Source sentences:
text: The Tibetan Mastiff lineage dates back to a proud and impressive ancestor who was historically a guard dog for monasteries, villages, and palaces in ancient Central Asia.