Question: what is the first file used in the boot process of windows vista
[{'answer': 'BOOTMGR', 'provenance': [{'wikipedia_id': '5881986', 'title': 'Windows NT 6 startup process', 'start_paragraph_id': 2, 'start_character': 216, 'end_paragraph_id': 2, 'end_character': 223, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5881986', 'title': 'Windows NT 6 startup process', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 456, 'bleu_score': 0.9526545221285041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11132446761136743647}, 'section': 'Section::::Abstract.'}]}]