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Process consistency and control are bottleneck issues to wider insertion of powder-bed fusion additive manufacturing in the industrial shopfloor .
 concept or principle: Process consistency; concept or principle: bottleneck; concept or principle: fusion; manufacturing process: additive manufacturing; 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: Process consistency, bottleneck, fusion, additive manufacturing, industrial 
Answer:
 concept or principle: Process consistency; concept or principle: bottleneck; concept or principle: fusion; manufacturing process: additive manufacturing; application: industrial