Question: who sang iko iko in the 80's
[{'answer': 'Natasha England', 'provenance': [{'wikipedia_id': '1634105', 'title': 'Iko Iko', 'start_paragraph_id': 1, 'start_character': 732, 'end_paragraph_id': 1, 'end_character': 747, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1634105', 'title': 'Iko Iko', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 927, 'bleu_score': 0.8839358636340281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10471191979809879842}, 'section': 'Section::::Abstract.'}]}]