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The IN718 coupon built by L-PBF are characterized using optical and scanning electron microscopies .
 material: IN718; manufacturing process: L-PBF; process characterization: optical; process characterization: scanning electron microscopies
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: IN718, L-PBF, optical, scanning electron microscopies 
Answer:
 material: IN718; manufacturing process: L-PBF; process characterization: optical; process characterization: scanning electron microscopies