Assertion: cave's feature | /r/HasProperty | formed
Facets:
value: recently
type: TEMPORAL
Source sentences:
text: The carbonic acid that causes karstic features is formed as rain passes through Earth's atmosphere picking up carbon dioxide (CO 2 ), which dissolves in the water.
text: Intrusive features like stocks, laccoliths, sills, and dikes are formed.
text: This indicates these features were formed recently and by a different process than the one that carved the caves.