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The belt filter ( sometimes called a belt filter press ) is an industrial machine , used for solid/liquid separation processes , particularly the dewatering of sludge s in the chemical industry , mining and water treatment .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
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