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Due to the very specific failure mechanisms in graded lattices , future work ought to put more emphasis on the experimental verification in order to make more reliable predictions for their performance .
 machanical property: failure mechanisms; concept or principle: lattices; concept or principle: experimental; concept or principle: predictions; concept or principle: performance
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: failure mechanisms; concept or principle: lattices; concept or principle: experimental; concept or principle: predictions; concept or principle: performance