2039
Melt pool surface sampling by LIBS probe was demonstrated to be the only choice for quantitative elemental analysis .
 material: Melt pool; concept or principle: sampling; machine or equipment: probe; material: be; concept or principle: quantitative; process characterization: elemental analysis
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: Melt pool, sampling, probe, be, quantitative, elemental analysis 
Answer:
 material: Melt pool; concept or principle: sampling; machine or equipment: probe; material: be; concept or principle: quantitative; process characterization: elemental analysis