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Conventional ceramic processing requires extensive post-processing including high temperature sintering , which makes it difficult for direct fabrication of metal-ceramic multi-layer structures .
 manufacturing process: ceramic processing; concept or principle: post-processing; process parameter: temperature; manufacturing process: sintering; manufacturing process: fabrication
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: ceramic processing, post-processing, temperature, sintering, fabrication 
Answer:
 manufacturing process: ceramic processing; concept or principle: post-processing; process parameter: temperature; manufacturing process: sintering; manufacturing process: fabrication