8656
This leads to additional effort and costs in post-processing and use of sacrificial support structures .
 concept or principle: post-processing; engineering feature: support structures
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: post-processing, support structures 
Answer:
 concept or principle: post-processing; engineering feature: support structures