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One of the biggest challenges in modeling the μ-SLM process is the computational treatment of the formation and growth of crystal nuclei in the meltpool .
 enabling technology: modeling; concept or principle: process; concept or principle: nuclei; process characterization: meltpool
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: modeling, process, nuclei, meltpool 
Answer:
 enabling technology: modeling; concept or principle: process; concept or principle: nuclei; process characterization: meltpool