Assertion: mantle | /r/HasProperty | layer
Facets:
value: inside a planetary body
type: LOCATION
Source sentences:
text: A mantle is a layer inside a planetary body bounded below by a core and above by a crust.
text: The mantle is the layer located directly under the sima.
text: But just reaching the mantle, a layer about which we know relatively little, and retrieving a sample would be a scientific achievement of such a magnitude that some have called it geology's version of the moon landing.