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Microstructure analysis showed a noticeable increase in the grain size for higher % EP .
 concept or principle: Microstructure; machanical property: grain size
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: Microstructure, grain size 
Answer:
 concept or principle: Microstructure; machanical property: grain size