Assertion: pit's water | /r/HasProperty | turned acidic
Facets:
value: highly
type: DEGREE
Source sentences:
text: Combined with the heavy metals and chemicals of the prior mining operation, the water has turned highly acidic and measures are taken to keep birds out of the water ever since a 342-bird flock of snow geese died inside the mile-long, half-mile-wide pit in the 1990s.