1494
With an additive manufacturing approach , ceramic parts with complex 3D geometries , including overhangs or hollow enclosures , become possible .
 manufacturing process: additive manufacturing; material: ceramic; engineering feature: 3D geometries; process parameter: overhangs
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 manufacturing, ceramic, 3D geometries, overhangs 
Answer:
 manufacturing process: additive manufacturing; material: ceramic; engineering feature: 3D geometries; process parameter: overhangs