Assertion: cave's formation | /r/HasProperty | absent
Facets:
value: occasionally
type: DEGREE
value: in the bryce canyon area
type: LOCATION
Source sentences:
text: Two formations, the Canaan Peak and the Pine Hollow, sit on top of the Kaiparowits elsewhere in the region but are absent in the Bryce Canyon area.
text: In this area, where formations are occasionally absent, the ceiling and walls are covered by a green-gray residual clay, which combined with the graceful contours of the ceiling rivals the formations in beauty.