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In 2012 , Sovacool was invited by the Intergovernmental Panel on Climate Change ( IPCC ) to be a contributing author to its Working Group II , which deals with climate change mitigation .
 Sovacool, Intergovernmental Panel on Climate Change
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sovacool, Intergovernmental Panel on Climate Change