Question: which was the first african country to gain independence
[{'answer': 'Ghana', 'provenance': [{'wikipedia_id': '1815296', 'title': 'Decolonisation of Africa', 'start_paragraph_id': 8, 'start_character': 51, 'end_paragraph_id': 8, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::Causes.:External causes.\n'}]}, {'provenance': [{'wikipedia_id': '1815296', 'title': 'Decolonisation of Africa', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 158, 'bleu_score': 0.682449197666817, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8716558483524657204}, 'section': 'Section::::British Empire.:Ghana.\n'}]}]