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However , thermal stress accumulated during Metal PBF may induce part distortion and even cause failure of the entire process .
 machanical property: thermal stress; material: Metal; concept or principle: distortion; concept or principle: failure; concept or principle: process
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: thermal stress, Metal, distortion, failure, process 
Answer:
 machanical property: thermal stress; material: Metal; concept or principle: distortion; concept or principle: failure; concept or principle: process