Assertion: volcano | /r/HasProperty | erupted including many periods
Facets:
value: since 1882
type: TEMPORAL
Source sentences:
text: Not much is known about how long the volcano has been erupting, but since 1882, it has erupted at least 34 times, including many periods where activity was continuous for years at a time, often in the form of a churning lava lake in the crater.