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The crack propagation mechanism of LAMed 300 M steel is revealed by EBSD .
 concept or principle: crack propagation; material: steel; process characterization: EBSD
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: crack propagation, steel, EBSD 
Answer:
 concept or principle: crack propagation; material: steel; process characterization: EBSD