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Walter Lappert , ( 22 March 1921 - 1 September 2003 ) at the age of 61 , founded a business in Kauai to manufacture and sell " super-premium " ice cream based on family recipes from his European upbringing .
 Walter Lappert
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Walter Lappert