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Selective laser sintering , also called laser sintering ( LS ) , is an additive manufacturing process that requires micronized plastic powder .
 manufacturing process: Selective laser sintering; manufacturing process: laser sintering; manufacturing process: additive manufacturing process; material: plastic
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 sintering, laser sintering, additive manufacturing process, plastic 
Answer:
 manufacturing process: Selective laser sintering; manufacturing process: laser sintering; manufacturing process: additive manufacturing process; material: plastic