3948
For rhombic dodecahedron structures apparent modulus and strength are predicted in 15 directions with mean errors of 4.2 % and 5.1 % respectively .
 strength, predicted, errors
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 strength, predicted, errors