Question: when did the british raj begin and end
[{'answer': 'between 1858 and 1947'}, {'provenance': [{'wikipedia_id': '4208015', 'title': 'British Raj', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 592, 'bleu_score': 0.5028778631917981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5186067701939308465}, 'section': 'Section::::Abstract.'}]}]