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In the selective laser melting ( SLM ) process , the components are produced layer-wise using a laser beam .
 manufacturing process: selective laser melting; manufacturing process: SLM; concept or principle: process; machine or equipment: components; concept or principle: laser beam
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: selective laser melting, SLM, process, components, laser beam 
Answer:
 manufacturing process: selective laser melting; manufacturing process: SLM; concept or principle: process; machine or equipment: components; concept or principle: laser beam