Assertion: mastiff's owner | /r/HasProperty | careful
Facets:
value: very
type: DEGREE
value: about nutrition
type: OTHER
Source sentences:
text: Because they are so large, owners have to be really careful about nutrition and caring for their rapidly growing dog.
text: Prospective owners should be very careful when considering buying a puppy with an overly heavy build or excessive dewlaps and wrinkles.