Question: who played bob cratchit in a christmas carol
[{'answer': 'David Warner', 'provenance': [{'wikipedia_id': '2712712', 'title': 'A Christmas Carol (1984 film)', 'start_paragraph_id': 16, 'start_character': 12, 'end_paragraph_id': 16, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '2712712', 'title': 'A Christmas Carol (1984 film)', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 39, 'bleu_score': 0.5081327481546141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2522606041858417157}, 'section': 'Section::::Cast.\n'}]}]