61707
These are the reasons why boring is viewed as an area of machining practice in its own right , separate from turning , with its own tips , tricks , challenges , and body of expertise , despite the fact that they are in some ways identical .
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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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