premise: The following list contains the aircraft used by the Royal Danish Air Force or its predecessors, the Danish Army Air Corps and Royal Danish Naval Aviation. During the Nazi occupation from 1940 to 1945, Danish military aviation was prohibited. The aircraft currently in use are highlighted in blue.
hypothesis: Denmark was occupied for half a decade in the middle of the twentieth century.
reason: Denmark was occupied by the nazi's for 5 years in the 1940's. The system sometimes has trouble with relative dates.