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Merchant-entrepreneur John DeWitt , a New York merchant , hired Lewis in 1851 to assist DeWitt 's son-in-law , Lucius Allen , in running a wholesale supply house in Portland , a frontier settlement on the West Coast .
 Lewis, Portland, Coast
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lewis, Portland, Coast