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Non-destructive diffraction based methods can be used to calculate the profile of stress in a part but these are often prohibitively expensive or difficult to use on a large scale .
 process characterization: diffraction; material: be; engineering feature: profile; machanical property: stress
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: diffraction, be, profile, stress 
Answer:
 process characterization: diffraction; material: be; engineering feature: profile; machanical property: stress