Question: who is the first prime minister of south africa
[{'answer': 'Louis Botha', 'provenance': [{'wikipedia_id': '311228', 'title': 'Prime Minister of South Africa', 'start_paragraph_id': 3, 'start_character': 360, 'end_paragraph_id': 3, 'end_character': 371, 'bleu_score': 1.0, 'section': 'Section::::History of the office.\n'}]}, {'provenance': [{'wikipedia_id': '311228', 'title': 'Prime Minister of South Africa', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 569, 'bleu_score': 0.980097014099621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10869416592864416422}, 'section': 'Section::::History of the office.\n'}]}]