Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Cahokia Mounds State Historic Site' has mentioned 'Wood' in the following places:
Occurrence Sentence Text Source
[12] The inhabitants left no written records beyond symbols on pottery, shell, copper, wood, and stone, but the elaborately planned community, woodhenge, mounds, and burials reveal a complex and sophisticated society.
Wood in several parts of the mound has been radiocarbon-dated to between 950 and 1000xc2xa0CE.