1420
From 1965 to 1967 he was Chief of the Air Staff of the Royal Malaysian Air Force .
 organization: Staff; organization: Royal Malaysian Air Force
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: Staff, Royal Malaysian Air Force 
Answer:
 organization: Staff; organization: Royal Malaysian Air Force