Assertion: bat's colony | /r/AtLocation | bracken cave
Facets:
value: north of san antonio
type: LOCATION
value: with nearly 20 million bats
type: OTHER
Source sentences:
text: The largest known colony is found at Bracken Cave, north of San Antonio, Texas, with nearly 20 million bats; the bats from this colony congregate in huge numbers at altitudes between 180 and 1,000 m (590 and 3,280 ft), and even as high as 3,000 m (9,800 ft).