2027
Because of the very complex shapes of the parts having a biomimetic or bionic design , it is often necessary to use support structures for overhanging areas .
 machanical property: complex shapes; concept or principle: biomimetic; engineering feature: design; engineering feature: support structures; process parameter: areas
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:
 machanical property: complex shapes; concept or principle: biomimetic; engineering feature: design; engineering feature: support structures; process parameter: areas