Question: who does department of homeland security report to
[{'answer': 'Secretary of Homeland Security', 'provenance': [{'wikipedia_id': '58236', 'title': 'United States Department of Homeland Security', 'start_paragraph_id': 3, 'start_character': 169, 'end_paragraph_id': 3, 'end_character': 199, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '58236', 'title': 'United States Department of Homeland Security', 'start_paragraph_id': 27, 'start_character': 0, 'end_paragraph_id': 27, 'end_character': 180, 'bleu_score': 0.9271474438253491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14421337188833966840}, 'section': 'Section::::Structure.\n'}]}]