2108
Notably , the rough surface plays a dominant role in premature failure when the build thickness is below 2 mm .
 concept or principle: surface; concept or principle: failure; process parameter: build; manufacturing process: mm
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: surface, failure, build, mm 
Answer:
 concept or principle: surface; concept or principle: failure; process parameter: build; manufacturing process: mm