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Ni-Ti shape memory alloys ( SMAs ) are the most promising elastocaloric materials but they are difficult to process by conventional methods due to their poor manufacturability .
 material: shape memory alloys; material: SMAs; concept or principle: materials; concept or principle: process; concept or principle: manufacturability
Please list all entity words in the text that fit the category.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} 
Answer:
 material: shape memory alloys; material: SMAs; concept or principle: materials; concept or principle: process; concept or principle: manufacturability