2593
SEM analysis showed a fine ( 500–800 nm ) interconnected sub-granular structure for the AM 316L SS , but a polygonal coarse-grained structure for the wrought sample .
 process characterization: SEM; concept or principle: structure; manufacturing process: AM; material: SS; concept or principle: structure; concept or principle: wrought sample
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: SEM, structure, AM, SS, structure, wrought sample 
Answer:
 process characterization: SEM; concept or principle: structure; manufacturing process: AM; material: SS; concept or principle: structure; concept or principle: wrought sample