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Grant , Ritchie also built colliery winding engines and one of these is preserved at the Scottish Mining Museum ; a 2400 hp engine built for the Victoria Colliery in the 1890s .
 organization: Ritchie
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: Ritchie 
Answer:
 organization: Ritchie