Question: who sang for debra kerr in an affair to remember
[{'answer': 'Marni Nixon', 'provenance': [{'wikipedia_id': '884742', 'title': 'An Affair to Remember', 'start_paragraph_id': 16, 'start_character': 12, 'end_paragraph_id': 16, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '884742', 'title': 'An Affair to Remember', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 53, 'bleu_score': 0.725979529115477, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6714593765467286713}, 'section': 'Section::::Cast.\n'}]}]