Question: who plays the lead role in black panther
[{'answer': 'Chadwick Boseman', 'provenance': [{'wikipedia_id': '41677925', 'title': 'Black Panther (film)', 'start_paragraph_id': 1, 'start_character': 350, 'end_paragraph_id': 1, 'end_character': 366, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '41677925', 'title': 'Black Panther (film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 702, 'bleu_score': 0.802923771838953, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6749830062058009567}, 'section': 'Section::::Abstract.'}]}]