Question: who is the principal assistant to the president in all matters relating to the dod
[{'answer': 'Secretary of Defense', 'provenance': [{'wikipedia_id': '34010678', 'title': 'Organizational structure of the United States Department of Defense', 'start_paragraph_id': 6, 'start_character': 169, 'end_paragraph_id': 6, 'end_character': 189, 'bleu_score': 1.0, 'section': 'Section::::Chain of Command.\n'}]}, {'provenance': [{'wikipedia_id': '34010678', 'title': 'Organizational structure of the United States Department of Defense', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 456, 'bleu_score': 0.901583178764161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3643291768429664697}, 'section': 'Section::::Chain of Command.\n'}]}]