Question: who called the revolt of 1857 as national revolt
[{'answer': 'Benjamin Disraeli', 'provenance': [{'wikipedia_id': '590246', 'title': 'Indian Rebellion of 1857', 'start_paragraph_id': 144, 'start_character': 287, 'end_paragraph_id': 144, 'end_character': 304, 'bleu_score': 1.0, 'section': 'Section::::Aftermath.:Reorganisation.\n'}]}, {'provenance': [{'wikipedia_id': '590246', 'title': 'Indian Rebellion of 1857', 'start_paragraph_id': 171, 'start_character': 0, 'end_paragraph_id': 171, 'end_character': 773, 'bleu_score': 0.9845548242372031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14469822997878239223}, 'section': 'Section::::Historiography.\n'}]}]