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The γ → ε strain-induced martensitic transformation is the major deformation mode of the γ phase , meanwhile the formation of stripped ε phase at { 111 } γ habit planes contributed to a good combination of strength and ductility .
 concept or principle: deformation; concept or principle: phase; concept or principle: phase; machanical property: strength; machanical property: ductility
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: deformation, phase, phase, strength, ductility 
Answer:
 concept or principle: deformation; concept or principle: phase; concept or principle: phase; machanical property: strength; machanical property: ductility