1973
5 Special attention must be given to the loading direction during use , because anisotropic mechanical properties of LPBF objects exists .
 material: be; machanical property: anisotropic; concept or principle: properties; manufacturing process: LPBF
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:
 material: be; machanical property: anisotropic; concept or principle: properties; manufacturing process: LPBF