Assertion: meteoroid's impact | /r/HasProperty | confirmed
Facets:
value: conclusively
type: DEGREE
Source sentences:
text: Although no impact of a comet in Earth's history has been conclusively confirmed, the Tunguska event may have been caused by a fragment of Comet Encke.
text: Although no impact of a comet in Earth's history has been conclusively confirmed, the Tunguska event may have been caused by a fragment of Comet Encke.