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The Ruger Vaquero is a six-shot single-action revolver manufactured by Sturm , Ruger based on the .357 Magnum New Model Ruger Blackhawk frame that was introduced in 1973 .
 organization: Ruger; organization: Sturm , Ruger; organization: Ruger
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:
 organization: Ruger; organization: Sturm , Ruger; organization: Ruger