Assertion: mantle | /r/HasProperty | labelled as the d-layer
Facets:
Source sentences:
text: The lower mantle was initially labelled as the D-layer in Bullen's spherically symmetric model of the Earth.
text: The lower mantle was initially labelled as the D-layer in Bullen's spherically symmetric model of the Earth.
text: The lower mantle was initially labelled as the D-layer in Bullen's spherically symmetric model of the Earth.