1970
Additive manufacturing , also known as 3D printing , is a new technology that obliterates the geometrical limits of the produced workpieces and promises low running costs as compared to traditional manufacturing methods .
 manufacturing process: Additive manufacturing; material: as; manufacturing process: 3D printing; concept or principle: technology; engineering feature: geometrical limits; material: as; manufacturing process: traditional manufacturing
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, as, 3D printing, technology, geometrical limits, as, traditional manufacturing 
Answer:
 manufacturing process: Additive manufacturing; material: as; manufacturing process: 3D printing; concept or principle: technology; engineering feature: geometrical limits; material: as; manufacturing process: traditional manufacturing