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Significant sample shrinkage ( 12–20 % ) and weight gain ( 3.7–7 % ) from treatment was also observed in the tensile specimens .
 concept or principle: sample; process parameter: weight gain; machine or equipment: tensile specimens
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: sample, weight gain, tensile specimens 
Answer:
 concept or principle: sample; process parameter: weight gain; machine or equipment: tensile specimens