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The case study consists of the development of a two cubic meter capacity plastic part for the naval industry with a topology optimization design approach and material selection and validation methodology for a large-volume pellet based extrusion system .
 concept or principle: case study; manufacturing standard: meter; concept or principle: capacity; application: industry; engineering feature: topology optimization; engineering feature: design; material: material; concept or principle: validation methodology; concept or principle: pellet; manufacturing process: extrusion
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: case study, meter, capacity, industry, topology optimization, design, material, validation methodology, pellet, extrusion 
Answer:
 concept or principle: case study; manufacturing standard: meter; concept or principle: capacity; application: industry; engineering feature: topology optimization; engineering feature: design; material: material; concept or principle: validation methodology; concept or principle: pellet; manufacturing process: extrusion