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Even if new standards are partly addressing such models , the development of mathematical representations useful for both design and simulation is still in progress .
 concept or principle: standards; concept or principle: mathematical; engineering feature: design; enabling technology: simulation
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: standards, mathematical, design, simulation 
Answer:
 concept or principle: standards; concept or principle: mathematical; engineering feature: design; enabling technology: simulation