Question: what is the name of the southernmost country in africa
[{'answer': 'South Africa', 'provenance': [{'wikipedia_id': '17416221', 'title': 'South Africa', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '17416221', 'title': 'South Africa', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 996, 'bleu_score': 0.7813359554501961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13446652344992447480}, 'section': 'Section::::Abstract.'}]}]