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Taken as a sign of the campaign 's runaway success , research by the Starch Company showed that these Volkswagen advertisements had higher reader scores than editorial pieces in many publications , noting that Volkswagen advertisements often did n't even include a slogan or logo .
 Volkswagen, Volkswagen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Volkswagen, Volkswagen