Question: who approves the head of the cabinet departments
[{'answer': 'United States Senate', 'provenance': [{'wikipedia_id': '274238', 'title': 'United States federal executive departments', 'start_paragraph_id': 2, 'start_character': 370, 'end_paragraph_id': 2, 'end_character': 390, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '274238', 'title': 'United States federal executive departments', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 773, 'bleu_score': 0.984188478234951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4764351429546333452}, 'section': 'Section::::Abstract.'}]}]