Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: On 20 November, 1945 the Nuremberg trials began - the military tribunals called to prosecute Nazi war criminals closely involved in the Holocaust.

Virtual reality to aid Auschwitz war trials of concentration camp guards