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Of the four metrics tested , the average avalanching angle , while statistically dependent of the powders angle of repose , showed poor correlation with experimental data .
 concept or principle: average; material: powders; concept or principle: experimental data
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: average, powders, experimental data 
Answer:
 concept or principle: average; material: powders; concept or principle: experimental data