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In addition , the micro-structure of the EBM sample is found free of preferential orientation , whereas in the SLM sample significant preference towards the hexagonal basal plane is found .
 manufacturing process: EBM; concept or principle: orientation; manufacturing process: SLM; concept or principle: sample; engineering feature: hexagonal; concept or principle: basal plane
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, orientation, SLM, sample, hexagonal, basal plane 
Answer:
 manufacturing process: EBM; concept or principle: orientation; manufacturing process: SLM; concept or principle: sample; engineering feature: hexagonal; concept or principle: basal plane