Question: what is the biggest cause of poverty in america
[{'answer': 'Unemployment', 'provenance': [{'wikipedia_id': '26411796', 'title': 'Causes of poverty', 'start_paragraph_id': 43, 'start_character': 0, 'end_paragraph_id': 43, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Primary causes by country.:United States.\n'}]}, {'provenance': [{'wikipedia_id': '26411796', 'title': 'Causes of poverty', 'start_paragraph_id': 43, 'start_character': 0, 'end_paragraph_id': 43, 'end_character': 326, 'bleu_score': 0.9645876452711911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10151386497943154451}, 'section': 'Section::::Primary causes by country.:United States.\n'}]}]