7916
Because of the limitations on tooling design imposed by the fact that the workpiece mostly surrounds the tool , boring is inherently somewhat more challenging than turning , in terms of decreased toolholding rigidity , increased clearance angle requirements ( limiting the amount of support that can be given to the cutting edge ) , and difficulty of inspection of the resulting surface ( size , form , surface roughness ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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