Question: who was the first person to be awarded the bharat ratna
[{'answer': 'politician C. Rajagopalachari ,', 'provenance': [{'wikipedia_id': '236912', 'title': 'Bharat Ratna', 'start_paragraph_id': 2, 'start_character': 46, 'end_paragraph_id': 2, 'end_character': 88, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'philosopher Sarvepalli Radhakrishnan', 'provenance': [{'wikipedia_id': '236912', 'title': 'Bharat Ratna', 'start_paragraph_id': 2, 'start_character': 77, 'end_paragraph_id': 2, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'scientist C.V. Raman'}, {'provenance': [{'wikipedia_id': '236912', 'title': 'Bharat Ratna', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1056, 'bleu_score': 0.8069821648309, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5721738999633831393}, 'section': 'Section::::Abstract.'}]}]