Assertion: marmot's burrow | /r/HasProperty | dug below the frost line
Facets:
Source sentences:
text: This burrow is usually in a wooded or brushy area and is dug below the frost line and remains at a stable temperature well above freezing during the winter months.
text: This burrow is usually in a wooded or brushy area and is dug below the frost line and remains at a stable temperature well above freezing during the winter months.