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The number density of coherent Al3Sc particles in heat treated condition reaches 5.2 × 1023 m−3 .
 machanical property: density; concept or principle: particles; concept or principle: heat
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: density, particles, heat 
Answer:
 machanical property: density; concept or principle: particles; concept or principle: heat