Question: who was the first army chief of nepal
[{'answer': 'Kaji Biraj Thapa Magar', 'provenance': [{'wikipedia_id': '12593188', 'title': 'Nepalese Army', 'start_paragraph_id': 195, 'start_character': 12, 'end_paragraph_id': 195, 'end_character': 34, 'bleu_score': 1.0, 'section': 'Section::::External links.\n'}]}]