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According to Paul Krugman , " Over all , the 1982 tax increase undid about a third of the 1981 cut ; as a share of GDP , the increase was substantially larger than Mr. " Clinton 's 1993 tax increase .
 Paul Krugman, Clinton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Paul Krugman, Clinton