Question: when did the welfare system began in the us
[{'answer': 'during the Great Depression', 'provenance': [{'wikipedia_id': '247817', 'title': 'Welfare', 'start_paragraph_id': 84, 'start_character': 63, 'end_paragraph_id': 84, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Welfare systems.:United States.\n'}]}, {'provenance': [{'wikipedia_id': '247817', 'title': 'Welfare', 'start_paragraph_id': 84, 'start_character': 0, 'end_paragraph_id': 84, 'end_character': 634, 'bleu_score': 0.9260989517395081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17032246406124798969}, 'section': 'Section::::Welfare systems.:United States.\n'}]}]