Question: who is snake in metal gear solid 5
[{'answer': 'Kiefer Sutherland', 'provenance': [{'wikipedia_id': '1081580', 'title': 'Big Boss (Metal Gear)', 'start_paragraph_id': 2, 'start_character': 148, 'end_paragraph_id': 2, 'end_character': 165, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]