Question: who plays sebastian in the greatest show on earth
[{'answer': 'Cornel Wilde', 'provenance': [{'wikipedia_id': '42137', 'title': 'The Greatest Show on Earth (film)', 'start_paragraph_id': 1, 'start_character': 243, 'end_paragraph_id': 1, 'end_character': 255, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '42137', 'title': 'The Greatest Show on Earth (film)', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 47, 'bleu_score': 0.6803749333171201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11717620449716795878}, 'section': 'Section::::Cast.\n'}]}]