1807
The design for AM rules and practical issues are discussed in detail in and more recently in the context of topology optimization in .
 engineering feature: design; manufacturing process: AM; engineering feature: topology optimization
Please list all entity words in the text that fit the category.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} 
Answer:
 engineering feature: design; manufacturing process: AM; engineering feature: topology optimization