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In this study , simple but effective theoretical solidification models are recalled to evaluate their ability to predict of microstructural features in additive manufacturing applications .
 manufacturing process: simple; concept or principle: theoretical solidification; concept or principle: microstructural; manufacturing process: additive manufacturing
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: simple, theoretical solidification, microstructural, additive manufacturing 
Answer:
 manufacturing process: simple; concept or principle: theoretical solidification; concept or principle: microstructural; manufacturing process: additive manufacturing