Question: Which Swiss vocalist born in 1975 founded the Swiss folk metal band which released 7 studio albums?
{'answer': 'Christian "Chrigel" Glanzmann', 'supporting_facts': [['Eluveitie discography', 0], ['Eluveitie discography', 1], ['Chrigel Glanzmann', 0], ['Chrigel Glanzmann', 2]]}