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The British Army mechanised all cavalry regiments between 1929 and 1941 , redefining their role from horse to armoured vehicles to form the Royal Armoured Corps together with the Royal Tank Regiment .
 organization: British Army; organization: Royal Armoured Corps; organization: Royal Tank Regiment
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: British Army, Royal Armoured Corps, Royal Tank Regiment 
Answer:
 organization: British Army; organization: Royal Armoured Corps; organization: Royal Tank Regiment