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The area of Norwich between the Salhouse and Plumstead roads ( outside of the outer ring road ) was originally the Cavalry Training Ground and then became the Royal Flying Corps Mousehold Heath aerodrome where Boulton Paul , among other manufacturers , passed over the aircraft they made for service .
 location: Norwich; location: Salhouse; organization: Royal Flying Corps; organization: Boulton Paul
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: Norwich, Salhouse, Royal Flying Corps, Boulton Paul 
Answer:
 location: Norwich; location: Salhouse; organization: Royal Flying Corps; organization: Boulton Paul