2603
We propose a numerical model to simulate the extrusion of a strand of semi-molten material on a moving substrate , within the computation fluid dynamics paradigm .
 concept or principle: model; manufacturing process: extrusion; machanical property: semi-molten; material: material; material: substrate; concept or principle: computation
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: model, extrusion, semi-molten, material, substrate, computation 
Answer:
 concept or principle: model; manufacturing process: extrusion; machanical property: semi-molten; material: material; material: substrate; concept or principle: computation