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However , of the approximately 5 , 400 terrestrial mammals on the IUCN Red List , no fewer than 789 ( ca . 14 % ) are listed as ' Data Deficient ' ( IUCN 2012 ) - IUCN ' s term for ' haven ' t got a clue ' .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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