7923
Freeform 3D printing combined with sacrificial molding promises to lead advances in production of highly complex tubular systems for biomedical applications .
 concept or principle: Freeform 3D; manufacturing process: sacrificial molding; material: lead; manufacturing process: production; engineering feature: tubular; application: biomedical applications
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: Freeform 3D, sacrificial molding, lead, production, tubular, biomedical applications 
Answer:
 concept or principle: Freeform 3D; manufacturing process: sacrificial molding; material: lead; manufacturing process: production; engineering feature: tubular; application: biomedical applications