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The contract involved upgrading the flight data processing system at the Oceanic Control Centre in Prestwick in south west Scotland for National Air Traffic Services Ltd ( NATS ) , subsidiary of the Civil Aviation Authority .
 location: Scotland; organization: NATS; organization: Civil Aviation Authority; location: Oceanic Control Centre; location: Prestwick; organization: National Air Traffic Services Ltd
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 location: Scotland; organization: NATS; organization: Civil Aviation Authority; location: Oceanic Control Centre; location: Prestwick; organization: National Air Traffic Services Ltd