Question: which religion has the highest population in africa
[{'answer': 'Christianity', 'provenance': [{'wikipedia_id': '1032627', 'title': 'Religion in Africa', 'start_paragraph_id': 1, 'start_character': 181, 'end_paragraph_id': 1, 'end_character': 193, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Islam', 'provenance': [{'wikipedia_id': '1032627', 'title': 'Religion in Africa', 'start_paragraph_id': 1, 'start_character': 195, 'end_paragraph_id': 1, 'end_character': 200, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1032627', 'title': 'Religion in Africa', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 839, 'bleu_score': 0.857964676829141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14464157597272186336}, 'section': 'Section::::Abrahamic religions.:Christianity.\n'}]}]