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However , he soon escaped in October 1856 as part of a breakout that seized a brig tied up at the prison wharf that the convicts sailed across the bay and escaped into Contra Costa County ( although other sources claim he served his prison term ) .
 location: Contra Costa County
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: Contra Costa County