Question: what is the currency in south africa called
[{'answer': 'rand', 'provenance': [{'wikipedia_id': '298686', 'title': 'South African rand', 'start_paragraph_id': 0, 'start_character': 14, 'end_paragraph_id': 0, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]