Question: who sang at the 2017 afl grand final
[{'answer': 'The Killers', 'provenance': [{'wikipedia_id': '51846546', 'title': '2017 AFL Grand Final', 'start_paragraph_id': 15, 'start_character': 212, 'end_paragraph_id': 15, 'end_character': 223, 'bleu_score': 1.0, 'section': 'Section::::Entertainment/Pre-match.\n'}]}, {'answer': 'Dami Im', 'provenance': [{'wikipedia_id': '51846546', 'title': '2017 AFL Grand Final', 'start_paragraph_id': 15, 'start_character': 387, 'end_paragraph_id': 15, 'end_character': 394, 'bleu_score': 1.0, 'section': 'Section::::Entertainment/Pre-match.\n'}]}, {'provenance': [{'wikipedia_id': '51846546', 'title': '2017 AFL Grand Final', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 882, 'bleu_score': 0.9131373050885331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13149693842526041744}, 'section': 'Section::::Entertainment/Pre-match.\n'}]}]