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A particularly rapid prototyping technique of additive manufacturing is laser beam melting ( LBM ) .
 enabling technology: rapid prototyping; manufacturing process: additive manufacturing; 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: rapid prototyping, additive manufacturing, laser beam 
Answer:
 enabling technology: rapid prototyping; manufacturing process: additive manufacturing; concept or principle: laser beam