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The additive LMH approach presented here is intended to extend microwave sintering capabilities , mainly known in volumetric molds , also to applications in the framework of rapid prototyping , additive manufacturing , and 3D-printing .
 material: additive; manufacturing process: microwave sintering; machine or equipment: molds; concept or principle: framework; enabling technology: rapid prototyping; manufacturing process: additive manufacturing; manufacturing process: 3D-printing
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: additive, microwave sintering, molds, framework, rapid prototyping, additive manufacturing, 3D-printing 
Answer:
 material: additive; manufacturing process: microwave sintering; machine or equipment: molds; concept or principle: framework; enabling technology: rapid prototyping; manufacturing process: additive manufacturing; manufacturing process: 3D-printing