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During additive manufacturing processing , these defects can span the length of columnar grains , as well as intergranular regions .
 manufacturing process: additive manufacturing; concept or principle: defects; machanical property: columnar grains; material: as; material: as
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: additive manufacturing, defects, columnar grains, as, as 
Answer:
 manufacturing process: additive manufacturing; concept or principle: defects; machanical property: columnar grains; material: as; material: as