Assertion: hummingbird | /r/HasProperty | hard
Facets:
value: generally
type: DEGREE
Source sentences:
text: Hummingbirds have a specialized diet that is difficult to duplicate, so they would be hard to feed properly, and they might get sick and die too soon.
text: Also, hummingbirds are generally hard to keep in captivity, and though this species is generally rather hardy, it has been noted that abandoned young may die despite given optimal treatment when trying to hand-raise them.