1208
Hereby investigating intersected , scaled and graded lattices with strut- and surface-based self-supporting unit cells for design aspect like structural optimality , design effort , support requirements , robustness i.e .
 concept or principle: lattices; engineering feature: self-supporting; application: cells; engineering feature: design; engineering feature: design; application: support; machanical property: robustness
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: lattices; engineering feature: self-supporting; application: cells; engineering feature: design; engineering feature: design; application: support; machanical property: robustness