Assertion: keep's wall | /r/HasProperty | built in ancient china
Facets:
value: since the shang dynasty
type: TEMPORAL
Source sentences:
text: Large tempered earth (i.e. rammed earth) walls were built in ancient China since the Shang dynasty (c. 1600–1050 BC); the capital at ancient Ao had enormous walls built in this fashion (see siege for more info).