Assertion: natural avalanche | /r/HasProperty | obvious signs of instability
Facets:
value: almost always
type: TEMPORAL
value: by the time
type: TEMPORAL
Source sentences:
text: Natural avalanches occur because of new or windblown snow overloads weak-layers or because of rapid warming, but there are almost always obvious signs of instability by the time avalanches come down on their own.
text: Natural avalanches occur because of new or windblown snow overloads weak-layers or because of rapid warming, but there are almost always obvious signs of instability by the time avalanches come down on their own.