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Brittle polymers suffer from the lack of stretchability , which limits their application when large deformation is required .
 machanical property: Brittle; engineering feature: stretchability; concept or principle: limits; concept or principle: deformation
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: Brittle, stretchability, limits, deformation 
Answer:
 machanical property: Brittle; engineering feature: stretchability; concept or principle: limits; concept or principle: deformation