807
Further , the WAAM process encourages columnar grain growth and the development of a strong fibre texture , leading to anisotropy in grain structure .
 manufacturing process: WAAM; concept or principle: process; machanical property: columnar grain; material: fibre; machanical property: anisotropy; concept or principle: grain structure
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: WAAM; concept or principle: process; machanical property: columnar grain; material: fibre; machanical property: anisotropy; concept or principle: grain structure