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EBM technology has been continuously evolving , optimizing the properties and the microstructure of the aB-fabricated alloys .
 manufacturing process: EBM; concept or principle: properties; concept or principle: microstructure; material: alloys
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: EBM, properties, microstructure, alloys 
Answer:
 manufacturing process: EBM; concept or principle: properties; concept or principle: microstructure; material: alloys