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Cobden was much impressed by Mallet and he by Cobden , and Mallet became a strong advocate of free trade , and a founder member of the Cobden Club after Cobden 's death .
 Cobden, Mallet, Cobden, Mallet, Cobden Club, Cobden
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cobden, Mallet, Cobden, Mallet, Cobden Club, Cobden