Question: who sings all i want for christmas in love actually
[{'answer': 'Olivia Rose Olson', 'provenance': [{'wikipedia_id': '1245864', 'title': 'Olivia Olson', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1245864', 'title': 'Olivia Olson', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 338, 'bleu_score': 0.965203995518735, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13665540372944433626}, 'section': 'Section::::Abstract.'}]}]