Question: mughal emperor who shifted capital from agra to delhi
[{'answer': 'Shāh Jahān', 'provenance': [{'wikipedia_id': '356275', 'title': 'Agra', 'start_paragraph_id': 17, 'start_character': 167, 'end_paragraph_id': 17, 'end_character': 177, 'bleu_score': 1.0, 'section': 'Section::::History.:Mughal era.\n'}]}, {'provenance': [{'wikipedia_id': '356275', 'title': 'Agra', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 306, 'bleu_score': 0.962600167205617, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16256741726504751363}, 'section': 'Section::::History.:Mughal era.\n'}]}]