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Due to the complexity of this process , efficient and accurate prediction of residual stress in large components remains challenging .
 concept or principle: complexity; concept or principle: process; process characterization: accurate; machanical property: residual stress; machine or equipment: components
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: complexity, process, accurate, residual stress, components 
Answer:
 concept or principle: complexity; concept or principle: process; process characterization: accurate; machanical property: residual stress; machine or equipment: components