1891
The main reason for this was the assumption that AM can overcome manufacturing problems of TO generated structure as these structures would encounter in conventional manufacturing processes .
 manufacturing process: AM; manufacturing process: manufacturing; concept or principle: structure; material: as; manufacturing process: conventional manufacturing
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: AM; manufacturing process: manufacturing; concept or principle: structure; material: as; manufacturing process: conventional manufacturing