Question: which country has the most gold in africa
[{'answer': 'South Africa', 'provenance': [{'wikipedia_id': '18300514', 'title': 'List of countries by gold production', 'start_paragraph_id': 2, 'start_character': 27, 'end_paragraph_id': 2, 'end_character': 39, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18300514', 'title': 'List of countries by gold production', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 320, 'bleu_score': 0.5420754989255621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11018071450928708378}, 'section': 'Section::::Abstract.'}]}]