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Cu-Al alloy was in-situ fabricated by twin wire arc additive manufacturing .
 material: alloy; concept or principle: in-situ fabricated; manufacturing process: wire arc additive manufacturing
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: alloy, in-situ fabricated, wire arc additive manufacturing 
Answer:
 material: alloy; concept or principle: in-situ fabricated; manufacturing process: wire arc additive manufacturing