Assertion: castle's wall | /r/HasProperty | built of stone
Facets:
value: on top of the motte
type: LOCATION
value: depending on local availability
type: OTHER
value: in the next stage of development
type: TEMPORAL
Source sentences:
text: An outer wall was built of stone on top of the motte, and it is then known as a shell keep.
text: In the next stage of development, an outer wall was built of stone on top of the motte and then known as a shell keep.
text: The walls were built of mudbricks, stone, wood, or a combination of these materials, depending on local availability.