21565
While the key for a solid - to - solid transformation is that the reaction occurs below the eutectic temperature of the reactant and product two - component system , experimental evidence suggests that those reactions will undergo a reconstructive phase transition when they take place above the glass transition temperature .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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