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This paper may serve as an introduction to the rather complex field of AM design of load bearing structures and is an illustrated case study thereof which can be of use for engineers working in this specific field that is still the topic of global academic and industrial research .
 material: as; manufacturing process: AM; concept or principle: case study; material: be; application: industrial
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: as, AM, case study, be, industrial 
Answer:
 material: as; manufacturing process: AM; concept or principle: case study; material: be; application: industrial