Assertion: supernova | /r/CapableOf | occur within a radius of 200 light years
Facets:
value: approximately once
type: TEMPORAL
Source sentences:
text: A supernova would occur within a radius of 200 light years approximately once every million years, within 500 light years every 69,000 years, and within 1,000 light years roughly every 8,625 years.