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Many technologies have been refined to a level where geometric tolerances are highly predictable and achieving up to 97 % final density values .
 concept or principle: technologies; engineering feature: geometric tolerances; concept or principle: predictable; machanical property: density
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: technologies, geometric tolerances, predictable, density 
Answer:
 concept or principle: technologies; engineering feature: geometric tolerances; concept or principle: predictable; machanical property: density