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The most famous painting featuring the falls , painted by Lucius Richard O'Brien in 1882 , is held by the National Gallery of Canada .
 person: Lucius Richard O'Brien; location: National Gallery of Canada
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: Lucius Richard O'Brien; location: National Gallery of Canada