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Thermally induced residual stresses and residual distortions in the additive manufactured ( AM ) parts are two of the major obstacles that are preventing AM technology from gaining wide adoption .
 machanical property: residual stresses; concept or principle: residual distortions; manufacturing process: additive manufactured; manufacturing process: AM; manufacturing process: AM technology
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: residual stresses, residual distortions, additive manufactured, AM, AM technology 
Answer:
 machanical property: residual stresses; concept or principle: residual distortions; manufacturing process: additive manufactured; manufacturing process: AM; manufacturing process: AM technology