Assertion: kingfisher's burrow | /r/HasProperty | extended
Facets:
value: from year
type: TEMPORAL
Source sentences:
text: The burrow extends inward, sloping slightly upward, for varying distances, usually from 3 to 6 feet, but sometimes as much as 10 or even 15 feet; as kingfishers sometimes use the same burrow for several years in succession, it may be that the deepest burrows are the oldest and have been extended from year to year to provide a fresh, clean nest.