Question: in what movie did the song white christmas make its debut
[{'answer': 'Holiday Inn', 'provenance': [{'wikipedia_id': '2817162', 'title': 'White Christmas (film)', 'start_paragraph_id': 1, 'start_character': 322, 'end_paragraph_id': 1, 'end_character': 333, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2817162', 'title': 'White Christmas (film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 333, 'bleu_score': 0.900181664963514, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10703703092979497071}, 'section': 'Section::::Abstract.'}]}]