3439
The reduced cooling rate directly contributed to the decreased heterogeneous nucleation rate and the coarsening of austenite grains in the top domain .
 process parameter: cooling rate; concept or principle: heterogeneous nucleation; material: austenite; concept or principle: domain
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: cooling rate, heterogeneous nucleation, austenite, domain 
Answer:
 process parameter: cooling rate; concept or principle: heterogeneous nucleation; material: austenite; concept or principle: domain