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For example Leary , describes a variant where traditional TO is conducted and a boundary decomposition algorithm is applied to detect and decompose the internal or external boundary areas needing support structures .
 concept or principle: boundary decomposition algorithm; engineering feature: boundary; process parameter: areas; engineering feature: support structures
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:
 concept or principle: boundary decomposition algorithm; engineering feature: boundary; process parameter: areas; engineering feature: support structures