Question: who is the black guy from doctor strange
[{'answer': 'Chiwetel Ejiofor as Karl Mordo', 'provenance': [{'wikipedia_id': '41668588', 'title': 'Doctor Strange (2016 film)', 'start_paragraph_id': 12, 'start_character': 12, 'end_paragraph_id': 12, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'provenance': [{'wikipedia_id': '41668588', 'title': 'Doctor Strange (2016 film)', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 1418, 'bleu_score': 0.9757993566928461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18325556783387414809}, 'section': 'Section::::Cast.\n'}]}]