Question: what is the incarceration rate in the united states
[{'answer': '0.71 % of the population', 'provenance': [{'wikipedia_id': '17218450', 'title': 'United States incarceration rate', 'start_paragraph_id': 1, 'start_character': 181, 'end_paragraph_id': 1, 'end_character': 203, 'bleu_score': 0.668740304976422, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '17218450', 'title': 'United States incarceration rate', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 569, 'bleu_score': 0.583704117674679, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3834622025267959124}, 'section': 'Section::::Abstract.'}]}]