Question: who sings the song saturday in the park
[{'answer': 'Chicago', 'provenance': [{'wikipedia_id': '6377969', 'title': 'Saturday in the Park (song)', 'start_paragraph_id': 1, 'start_character': 82, 'end_paragraph_id': 1, 'end_character': 89, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6377969', 'title': 'Saturday in the Park (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 121, 'bleu_score': 0.9146912192286941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3955921117761727165}, 'section': 'Section::::Abstract.'}]}]