Assertion: mastiff's dog | /r/HasProperty | manageable
Facets:
Source sentences:
text: Their training must start when dogs are still manageable too, beginning with the basics as soon as a Mastiff puppy arrives in their new home.
text: Extremely loyal, this breed is eager to please its owners but due to its size, it is essential that proper training and socialization begin early in life while the dog is still a manageable size.