4540
The samples comprised columnar grains , each containing numerous subgrains of a single-phase face-centered cubic solid solution .
 concept or principle: samples; machanical property: columnar grains; concept or principle: subgrains; material: solid solution
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: samples, columnar grains, subgrains, solid solution 
Answer:
 concept or principle: samples; machanical property: columnar grains; concept or principle: subgrains; material: solid solution