Question: who called 1857 revolt first war of independence
[{'answer': 'Vinayak Damodar Savarkar', 'provenance': [{'wikipedia_id': '16207734', 'title': 'Names of the Indian Rebellion of 1857', 'start_paragraph_id': 5, 'start_character': 72, 'end_paragraph_id': 5, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::Indian nomenclature.\n'}]}, {'provenance': [{'wikipedia_id': '16207734', 'title': 'Names of the Indian Rebellion of 1857', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 202, 'bleu_score': 0.9402297675816911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13388875323213863527}, 'section': 'Section::::Indian nomenclature.\n'}]}]