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The study demonstrates that the tensile strength of a 3D printed specimen depends largely on the mass of the specimen , for all materials .
 machanical property: tensile strength; manufacturing process: 3D printed; concept or principle: materials
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: tensile strength, 3D printed, materials 
Answer:
 machanical property: tensile strength; manufacturing process: 3D printed; concept or principle: materials