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After discretizing the geometries as slicing contours , TPMSs can be efficiently extracted using the intersection-interpolation method in 2D space , and then be offset as infill areas of sheet solids .
 concept or principle: geometries; material: as; engineering feature: contours; material: be; concept or principle: extracted; concept or principle: 2D; material: be; material: as; process parameter: areas; material: sheet
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: geometries, as, contours, be, extracted, 2D, be, as, areas, sheet 
Answer:
 concept or principle: geometries; material: as; engineering feature: contours; material: be; concept or principle: extracted; concept or principle: 2D; material: be; material: as; process parameter: areas; material: sheet