Question: who plays the witch in dead men tell no tales
[{'answer': 'Golshifteh Farahani', 'provenance': [{'wikipedia_id': '41861349', 'title': 'Pirates of the Caribbean: Dead Men Tell No Tales', 'start_paragraph_id': 20, 'start_character': 12, 'end_paragraph_id': 20, 'end_character': 31, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}]