Question: who plays the caterpillar in alice in wonderland
[{'answer': 'Alan Rickman', 'provenance': [{'wikipedia_id': '14482638', 'title': 'Alice in Wonderland (2010 film)', 'start_paragraph_id': 1, 'start_character': 277, 'end_paragraph_id': 1, 'end_character': 289, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14482638', 'title': 'Alice in Wonderland (2010 film)', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 318, 'bleu_score': 0.913557054993779, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13852002667926097398}, 'section': 'Section::::Cast.:Voice cast.\n'}]}]