Question: who played the ghost of christmas past in a christmas carol 2009
[{'answer': 'Jim Carrey', 'provenance': [{'wikipedia_id': '12121822', 'title': 'A Christmas Carol (2009 film)', 'start_paragraph_id': 1, 'start_character': 213, 'end_paragraph_id': 1, 'end_character': 223, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12121822', 'title': 'A Christmas Carol (2009 film)', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 800, 'bleu_score': 0.6268105452038341, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9090370845111706792}, 'section': 'Section::::Cast.\n'}]}]