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Acochlidiidae are a taxonomic family of shell-less freshwater gastropods ( one of them Palliohedyle weberi lives in brackish water ) , aquatic gastropod mollusk s within the clade Acochlidiacea .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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