Question: how many deputy governors are there in rbi
[{'answer': 'four', 'provenance': [{'wikipedia_id': '277069', 'title': 'Reserve Bank of India', 'start_paragraph_id': 2, 'start_character': 264, 'end_paragraph_id': 2, 'end_character': 268, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '277069', 'title': 'Reserve Bank of India', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 740, 'bleu_score': 0.927810050505087, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17500853982178239960}, 'section': 'Section::::Abstract.'}]}]