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He is then believed to have served in the Royal Artillery from 1914-1916 before joining the Royal Naval Air Service where he underwent training at Redcar , Cranwell and Frieston .
 organization: Royal Artillery; organization: Royal Naval Air Service; location: Redcar; location: Cranwell; location: Frieston
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: Royal Artillery, Royal Naval Air Service, Redcar, Cranwell, Frieston 
Answer:
 organization: Royal Artillery; organization: Royal Naval Air Service; location: Redcar; location: Cranwell; location: Frieston