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Other designs with heavy nosebands are also called hackamores , though some bitless designs with lighter weight nosebands that work off tension rather than weight are also called bitless bridle s. A noseband with shanks and a curb chain to add leverage is called a mechanical hackamore , but is not considered a true hackamore .
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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:
 None