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Gradients of microstructure , texture , residual stresses and chemical composition .
 concept or principle: microstructure; engineering feature: texture; machanical property: residual stresses; concept or principle: chemical composition
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: microstructure, texture, residual stresses, chemical composition 
Answer:
 concept or principle: microstructure; engineering feature: texture; machanical property: residual stresses; concept or principle: chemical composition