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For example , a prototype might be assembled using nuts and bolts , but in production such fasteners might be replaced by captive nuts or threaded holes built in to the parts , making assembly much faster , easier and therefore cheaper .
 None
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