Question: where is the big brother house located in south africa
[{'answer': 'Highlands North , Johannesburg', 'provenance': [{'wikipedia_id': '12547197', 'title': 'Big Brother Africa', 'start_paragraph_id': 27, 'start_character': 73, 'end_paragraph_id': 27, 'end_character': 108, 'bleu_score': 1.0, 'section': 'Section::::Big Brother Africa 9: Hot-Shots.\n'}]}, {'provenance': [{'wikipedia_id': '12547197', 'title': 'Big Brother Africa', 'start_paragraph_id': 27, 'start_character': 0, 'end_paragraph_id': 27, 'end_character': 184, 'bleu_score': 0.814869113038802, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15914108159578926544}, 'section': 'Section::::Big Brother Africa 9: Hot-Shots.\n'}]}]