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We have investigated the spatial distribution of microstructures of a Co-Cr-Mo alloy rod fabricated by Electron Beam Melting ( EBM ) method along built height .
 process characterization: spatial distribution; material: microstructures; material: alloy; concept or principle: fabricated; manufacturing process: Electron Beam Melting; manufacturing process: EBM
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: spatial distribution, microstructures, alloy, fabricated, Electron Beam Melting, EBM 
Answer:
 process characterization: spatial distribution; material: microstructures; material: alloy; concept or principle: fabricated; manufacturing process: Electron Beam Melting; manufacturing process: EBM