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Once its final location was announced approximately five miles north of Fort Abraham Lincoln , a work camp appeared on the west river bank in December 1878 complete with its own post office .
 location: Fort Abraham Lincoln
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Fort Abraham Lincoln