Question: who has the power to establish a prison system
[{'answer': 'The Federal Bureau of Prisons', 'provenance': [{'wikipedia_id': '1271411', 'title': 'Federal Bureau of Prisons', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]