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published the paper " Celebrating the anniversary of three key events in climate change science " in " Nature Climate Change " , claiming to have reached the 5-sigma " gold standard level " of statistical proof of human influence in global climate change using three sets of satellite data .
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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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