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His intention was to write an anti-government book , and had a bias in Riel 's favour - despite what Brown considered Riel 's own political conservatism - as Riel opposed the government .
 person: Riel; person: Brown; person: Riel; person: Riel
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:
 person: Riel; person: Brown; person: Riel; person: Riel