Question: what is the highest unemployment rate ever in the united states
[{'answer': '25 %', 'provenance': [{'wikipedia_id': '28688759', 'title': 'Unemployment in the United States', 'start_paragraph_id': 116, 'start_character': 840, 'end_paragraph_id': 116, 'end_character': 847, 'bleu_score': 1.0, 'section': 'Section::::Political debates.:Poll data.\n'}]}, {'provenance': [{'wikipedia_id': '28688759', 'title': 'Unemployment in the United States', 'start_paragraph_id': 32, 'start_character': 0, 'end_paragraph_id': 32, 'end_character': 984, 'bleu_score': 0.9875383322810981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16274732193445493041}, 'section': 'Section::::U.S. employment history.\n'}]}]