Question: who played mr. mcdowell in coming to america
[{'answer': 'John Amos', 'provenance': [{'wikipedia_id': '54540', 'title': 'Coming to America', 'start_paragraph_id': 1, 'start_character': 248, 'end_paragraph_id': 1, 'end_character': 257, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '54540', 'title': 'Coming to America', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 74, 'bleu_score': 0.8385766789076251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2353234418134646543}, 'section': 'Section::::Cast.\n'}]}]