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Very limited Additive Manufacturing ( AM ) processes have been developed for production of Metal Matrix Composites ( MMCs ) reinforced by ceramic .
 manufacturing process: Additive Manufacturing; manufacturing process: AM; concept or principle: processes; manufacturing process: production; material: Metal Matrix Composites; material: MMCs; concept or principle: reinforced; material: ceramic
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: Additive Manufacturing, AM, processes, production, Metal Matrix Composites, MMCs, reinforced, ceramic 
Answer:
 manufacturing process: Additive Manufacturing; manufacturing process: AM; concept or principle: processes; manufacturing process: production; material: Metal Matrix Composites; material: MMCs; concept or principle: reinforced; material: ceramic