Question: who sang schoolhouse rock i'm just a bill
[{'answer': 'Jack Sheldon', 'provenance': [{'wikipedia_id': '3824322', 'title': "I'm Just a Bill", 'start_paragraph_id': 1, 'start_character': 259, 'end_paragraph_id': 1, 'end_character': 271, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3824322', 'title': "I'm Just a Bill", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 466, 'bleu_score': 0.9776501033621461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17501752449690544315}, 'section': 'Section::::Abstract.'}]}]