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Abner Doble ( March 26 , 1890 – July 17 , 1961 ) , was an American mechanical engineer who built and sold steam-powered automobile s. His steam engine design was used in various automobiles from the early 1900s , including a 1969 GM prototype and the first successful steam powered aeroplane .
 person: Abner Doble; organization: sold
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Abner Doble, sold 
Answer:
 person: Abner Doble; organization: sold