Question: Simon & Garfunkel were an American folk rock duo consisting of singer-songwriter Paul Simon and singer Art Garfunkel, their biggest hits—including "Bridge over Troubled Water" is a song by American music duo Simon & Garfunkel, produced  by the duo and who?
{'answer': 'Roy Halee', 'supporting_facts': [['Simon &amp; Garfunkel', 2], ['Bridge over Troubled Water (song)', 1]]}