Question: whats the number one christmas song of all time
[{'answer': "`` White Christmas ''"}, {'provenance': [{'wikipedia_id': '153569', 'title': 'Christmas music', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1264, 'bleu_score': 0.985401024520372, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13047561543867441612}, 'section': 'Section::::Abstract.'}]}]