Question: what caused household dept to rise so much in the 1920's
[{'answer': 'Great Depression', 'provenance': [{'wikipedia_id': '19283335', 'title': 'Great Depression', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19283335', 'title': 'Great Depression', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 467, 'bleu_score': 0.8739543326731081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9817838631869847397}, 'section': 'Section::::Abstract.'}]}]