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Modelling is a very important step in AM because it shapes the product but it also must take in account some knowledge since the experiments and equipment are costly .
 enabling technology: Modelling; concept or principle: step; manufacturing process: AM; machine or equipment: equipment
Please list all entity words in the text that fit the category.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} 
Answer:
 enabling technology: Modelling; concept or principle: step; manufacturing process: AM; machine or equipment: equipment