Question: what is the currency of central african republic
[{'answer': 'The Central African CFA franc', 'provenance': [{'wikipedia_id': '3791894', 'title': 'Central African CFA franc', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3791894', 'title': 'Central African CFA franc', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 378, 'bleu_score': 0.9684940092844061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3495536639730608905}, 'section': 'Section::::Abstract.'}]}]