Question: who plays al jolson in the jolson story
[{'answer': 'Larry Parks', 'provenance': [{'wikipedia_id': '149789', 'title': 'The Jolson Story', 'start_paragraph_id': 1, 'start_character': 139, 'end_paragraph_id': 1, 'end_character': 150, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '149789', 'title': 'The Jolson Story', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 354, 'bleu_score': 0.9113480848578531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18293400648638520806}, 'section': 'Section::::Abstract.'}]}]