5606
Nevertheless , processing and powder feeding during SLM-fabrication occasionally results in microstructural defects , at which pronounced mass loss during cavitation was registered .
 machine or equipment: powder feeding; concept or principle: microstructural defects; concept or principle: cavitation
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: powder feeding, microstructural defects, cavitation 
Answer:
 machine or equipment: powder feeding; concept or principle: microstructural defects; concept or principle: cavitation