Question: who sang the song the winner takes it all
[{'answer': 'Swedish pop group ABBA', 'provenance': [{'wikipedia_id': '3461004', 'title': 'The Winner Takes It All', 'start_paragraph_id': 1, 'start_character': 52, 'end_paragraph_id': 1, 'end_character': 74, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3461004', 'title': 'The Winner Takes It All', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 289, 'bleu_score': 0.9269422159482571, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7485103078295859912}, 'section': 'Section::::Abstract.'}]}]