Question: who played the mom in charlie and the chocolate factory
[{'answer': 'Helena Bonham Carter', 'provenance': [{'wikipedia_id': '1277918', 'title': 'Charlie and the Chocolate Factory (film)', 'start_paragraph_id': 1, 'start_character': 285, 'end_paragraph_id': 1, 'end_character': 305, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1277918', 'title': 'Charlie and the Chocolate Factory (film)', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 47, 'bleu_score': 0.6803749333171201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9576528508580667027}, 'section': 'Section::::Cast.\n'}]}]