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William Downie ( 1820 – 1893 ) was a Scottish prospector and explorer involved in the gold rush es in California and British Columbia of the mid-19th Century .
 Downie, Columbia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Downie, Columbia