Question: where is the deepest mine of the world located
[{'answer': 'South Africa', 'provenance': [{'wikipedia_id': '50540648', 'title': 'List of deepest mines', 'start_paragraph_id': 8, 'start_character': 29, 'end_paragraph_id': 8, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::See also.\n'}]}]