Question: What is the name of this heavy metal band from Copenhagen, formed in 1981, who were part of the album A Tribute to Judas Priest: Legends of Metal?
{'answer': 'Mercyful Fate', 'supporting_facts': [['A Tribute to Judas Priest: Legends of Metal', 0], ['A Tribute to Judas Priest: Legends of Metal', 3], ['Mercyful Fate', 0]]}