Complex sentence: The criminal investigation into the downing of MH17 is being led by the Public Prosecution Service of the Dutch Ministry of Justice, and is the largest in Dutch history, involving dozens of prosecutors and 200 investigators.
Split into simpler sentences: The criminal investigation into the downing of MH17 was led by the Public Prosecution Service of the Dutch Ministry of Justice. The investigation was the largest in Dutch history, involving dozens of prosecutors and 200 investigators.