Question: who sang the song about jack and diane
[{'answer': 'John Mellencamp', 'provenance': [{'wikipedia_id': '1124714', 'title': 'Jack & Diane', 'start_paragraph_id': 1, 'start_character': 91, 'end_paragraph_id': 1, 'end_character': 106, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1124714', 'title': 'Jack & Diane', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 422, 'bleu_score': 0.9257921357402691, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9614968068328089115}, 'section': 'Section::::Abstract.'}]}]