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Conversely , there has been a lack of attention to modelling of these processes , and with increasing the popularity of 3D printing among practitioners , the need for simulation of the 3D printing process is certain .
 enabling technology: modelling; concept or principle: processes; manufacturing process: 3D printing; enabling technology: simulation; manufacturing process: 3D printing
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: processes; manufacturing process: 3D printing; enabling technology: simulation; manufacturing process: 3D printing