Task: Question Generation
Input (English): Context : F 5 Ljungbyhed, Kungliga Krigsflygskolan, Royal Air Force Flight Academy, or simply ``F 5'', is a former Swedish Air Force training wing with the main base located in Ljungbyhed in southern Sweden. 
Subject : F 5 Ljungbyhed 
Relation : military branch
Output (English): What military organization did F 5 Ljungbyhed belong to?