Assertion: acid geyser | /r/HasProperty | rare
Facets:
value: very
type: DEGREE
Source sentences:
text: The vast majority of the waters at Norris are acidic, including acid geysers which are very rare.
text: Acid geysers are extremely rare with the majority of the planet's total being found here at Norris Geyser Basin.
text: Acid geysers are very rare and the largest concentration of them are in the Norris Basin.