Question: which department in the presidents cabinet is led by the attorney general
[{'answer': 'Department of Justice', 'provenance': [{'wikipedia_id': '44002', 'title': 'United States Attorney General', 'start_paragraph_id': 1, 'start_character': 136, 'end_paragraph_id': 1, 'end_character': 157, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]