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Should these features require finishing , it may be somewhat difficult to achieve a stable quality , even when using automated techniques .
 manufacturing process: finishing; material: be; concept or principle: quality
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: finishing, be, quality 
Answer:
 manufacturing process: finishing; material: be; concept or principle: quality