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Point Udall , Virgin Islands is the easternmost point in the United States by travel , and was named for Udall 's brother , Stewart .
 Udall, Udall, Stewart
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Udall, Udall, Stewart