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To fully exploit the benefits of functional material complexity , further research must be conducted on rules and CAD representations of FGM related design intent .
 concept or principle: functional material complexity; concept or principle: research; material: be; enabling technology: CAD; manufacturing process: FGM; engineering feature: design
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: functional material complexity; concept or principle: research; material: be; enabling technology: CAD; manufacturing process: FGM; engineering feature: design