Question: what is the old name of state bank of india
[{'answer': 'Imperial Bank of India', 'provenance': [{'wikipedia_id': '403019', 'title': 'State Bank of India', 'start_paragraph_id': 2, 'start_character': 70, 'end_paragraph_id': 2, 'end_character': 92, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '403019', 'title': 'State Bank of India', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 557, 'bleu_score': 0.855304939446281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18278075123064852596}, 'section': 'Section::::Abstract.'}]}]