Question: who played sylvester in it's a mad mad mad mad world
[{'answer': 'Dick Shawn', 'provenance': [{'wikipedia_id': '18952889', 'title': "It's a Mad, Mad, Mad, Mad World", 'start_paragraph_id': 11, 'start_character': 711, 'end_paragraph_id': 11, 'end_character': 721, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '18952889', 'title': "It's a Mad, Mad, Mad, Mad World", 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 898, 'bleu_score': 0.9878413801697931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1666164239618529495}, 'section': 'Section::::Plot.\n'}]}]