Question: when was the last japanese soldier found on guam
[{'answer': '24 January 1972', 'provenance': [{'wikipedia_id': '415809', 'title': 'Shoichi Yokoi', 'start_paragraph_id': 6, 'start_character': 18, 'end_paragraph_id': 6, 'end_character': 33, 'bleu_score': 1.0, 'section': 'Section::::Capture.\n'}]}]