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Directed energy deposition ( DED ) is a promising technique for cladding and repair due to its ability to deposit molten metal onto existing surfaces .
 manufacturing process: Directed energy deposition; manufacturing process: DED; manufacturing process: cladding; material: molten metal; concept or principle: surfaces
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: Directed energy deposition, DED, cladding, molten metal, surfaces 
Answer:
 manufacturing process: Directed energy deposition; manufacturing process: DED; manufacturing process: cladding; material: molten metal; concept or principle: surfaces