Assertion: caldera | /r/MadeOf | prehistoric eruptions
Facets:
value: between 5,380 bp
type: TEMPORAL
value: between 140,000
type: TEMPORAL
Source sentences:
text: The caldera was formed by prehistoric eruptions between 140,000 and 5,380 BP.
text: The caldera was formed by prehistoric eruptions between 140,000 and 5,380 BP.