Question: when was the end of the industrial revolution
[{'answer': 'sometime between 1820 and 1840', 'provenance': [{'wikipedia_id': '14914', 'title': 'Industrial Revolution', 'start_paragraph_id': 1, 'start_character': 194, 'end_paragraph_id': 1, 'end_character': 224, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14914', 'title': 'Industrial Revolution', 'start_paragraph_id': 1, 'start_character': 55, 'end_paragraph_id': 1, 'end_character': 460, 'bleu_score': 0.8315668913816261, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13437321550677933834}, 'section': 'Section::::Abstract.'}]}]