Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Monumental Earthworks of Poverty Point' has mentioned 'Stone' in the following places:
Occurrence Sentence Text Source
[45] More commonly, however, they imported stone vessels made of steatite from the foothills of the Appalachian Mountains.
There is no naturally occurring stone at Poverty Point.
Based on the distant geological sources of different kinds of stone used to make lithic artifacts recovered at Poverty Point, archaeologists conclude that the inhabitants were active in trade with other Native Americans.
Although rich in edible resources, the setting lacked stone, a critical raw material for tools and other objects.