Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Henderson Island' has mentioned 'Stone' in the following places:
Occurrence Sentence Text Source
[2] The reasons for the inhabitantsxe2x80x99 disappearance remain uncertain, but they may relate to an exhaustion of resources[2] and to the disappearance around the same time of the Polynesians on Pitcairn Island, on whom the Hendersonians would have relied for many of the basics of life, especially for the stone needed to make tools.