7555
The comparison of the mechanical performance between Type-A and -B specimens demonstrated the negative influence of the presence of a geometrical boundary interface between the same material .
 application: mechanical; engineering feature: boundary; material: material
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: mechanical, boundary, material 
Answer:
 application: mechanical; engineering feature: boundary; material: material