Question: name the last mughal emperor to sit on the peacock throne
[{'answer': 'Muhammad Shah', 'provenance': [{'wikipedia_id': '299989', 'title': 'Peacock Throne', 'start_paragraph_id': 10, 'start_character': 666, 'end_paragraph_id': 10, 'end_character': 679, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '299989', 'title': 'Peacock Throne', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 1037, 'bleu_score': 0.9338824846734751, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6258864193911490635}, 'section': 'Section::::History.\n'}]}]