Question: Who has performed as a member of more musical groups, Alexi Laiho or Jónsi?
{'answer': 'Laiho', 'supporting_facts': [['Alexi Laiho', 0], ['Alexi Laiho', 1], ['Alexi Laiho', 2], ['Jónsi', 0], ['Jónsi', 4]]}