6706
It is hypothesized that the Polynesian settlers may have driven these bird species , along with six terrestrial snail species , to local extinction , and this loss of a ready and regular food supply may have contributed to the Polynesians ' subsequent disappearance .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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