Question: who wrote the song like a bridge over troubled waters
[{'answer': 'Paul Simon', 'provenance': [{'wikipedia_id': '634661', 'title': 'Bridge over Troubled Water (song)', 'start_paragraph_id': 1, 'start_character': 310, 'end_paragraph_id': 1, 'end_character': 320, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '634661', 'title': 'Bridge over Troubled Water (song)', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 633, 'bleu_score': 0.775050079490315, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12643562866272693013}, 'section': 'Section::::Background.\n'}]}]