261113
A shading insulator , or shinsulator , is used to cover a thermal mass ( e.g. roof pond ) and insulate the thermal mass as needed , either by re-radiating escaping heat back down towards the thermal mass , or by reflecting solar heat off the panel , reducing heat gathering by the thermal mass .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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