Question: The Clans Are Still Marching is a live DVD released by German heavy metal band Grave Digger on 7 March 2011 via Napalm Records, it was filmed live at the world-famous summer open-air heavy metal music festival, it takes place annually in the village of Wacken in Schleswig-Holstein?
{'answer': 'Wacken Open Air', 'supporting_facts': [['The Clans Are Still Marching', 1], ['Wacken Open Air', 0]]}