Question: when did railroads financial problems prompt nationwide economic panic
[{'answer': 'in 1883 -- 1884'}, {'provenance': [{'wikipedia_id': '596473', 'title': 'Long Depression', 'start_paragraph_id': 44, 'start_character': 0, 'end_paragraph_id': 44, 'end_character': 994, 'bleu_score': 0.8821075146471211, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11414226571851130574}, 'section': 'Section::::Course of the depression.:United States.\n'}]}]