2101
The high strengths exhibited by the water-quenched samples of both alloys , while maintaining appreciable tensile ductility , could be attributed to clustering of Cu within the α laths , revealed by atom probe tomography .
 machanical property: strengths; concept or principle: samples; material: alloys; machanical property: tensile ductility; material: be; material: Cu; process characterization: atom probe tomography
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: strengths, samples, alloys, tensile ductility, be, Cu, atom probe tomography 
Answer:
 machanical property: strengths; concept or principle: samples; material: alloys; machanical property: tensile ductility; material: be; material: Cu; process characterization: atom probe tomography