Question: in which year was assam separated from bengal
[{'answer': '1874', 'provenance': [{'wikipedia_id': '43313311', 'title': 'Assam Province', 'start_paragraph_id': 3, 'start_character': 55, 'end_paragraph_id': 3, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '43313311', 'title': 'Assam Province', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 232, 'bleu_score': 0.8138565913069751, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5696668314544931569}, 'section': 'Section::::Abstract.'}]}]