Assertion: asteroid | /r/CapableOf | wipe out city
Facets:
Source sentences:
text: NASA has not even come close to finding and tracking the 1 million smaller asteroids that might only just wipe out a city, or perhaps collapse the world economy if they hit in the wrong place," Ed Lu, CEO of the B612 Foundation, a nonprofit working to build Sentinel asteroid observatory, a NEO-hunting space telescope, said in April.