260
Wire Arc Additive Manufacturing ( WAAM ) is a promising technology for fabricating medium to large scale metallic parts with excellent productivity and flexibility .
 manufacturing process: Wire Arc Additive Manufacturing; manufacturing process: WAAM; concept or principle: technology; manufacturing process: fabricating; machine or equipment: metallic parts; concept or principle: productivity; machanical property: flexibility
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: Wire Arc Additive Manufacturing; manufacturing process: WAAM; concept or principle: technology; manufacturing process: fabricating; machine or equipment: metallic parts; concept or principle: productivity; machanical property: flexibility