Assertion: modern mastiff | /r/HasProperty | developed in england
Facets:
Source sentences:
text: The modern Mastiff was developed in England, where it was necessary to have a huge dog to guard grand estates.
text: The modern Mastiff was developed in England and was used as a watchdog on many estates.
text: The modern Mastiff was developed in England and was used as a watchdog on many estates.
text: The modern Mastiff was developed in England and was used as a watchdog on many estates.