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Various species of large marine gastropod shell s can be turned into " blowing shells " , but some of the best-known species are : the sacred chank or shankha Turbinella pyrum , the " Triton 's trumpet " Charonia tritonis , and the Queen Conch Strombus gigas .
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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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