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4.2.5 Powder bed fusion Powder-based printing technologies include selective laser sintering , direct metal laser sintering , selective laser melting and electron beam melting .
 manufacturing process: Powder bed fusion; enabling technology: printing technologies; manufacturing process: selective laser sintering; manufacturing process: direct metal laser sintering; manufacturing process: selective laser melting; manufacturing process: electron beam melting
Please list all entity words in the text that fit the category.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} 
Answer:
 manufacturing process: Powder bed fusion; enabling technology: printing technologies; manufacturing process: selective laser sintering; manufacturing process: direct metal laser sintering; manufacturing process: selective laser melting; manufacturing process: electron beam melting