Question: where does the nile river start in africa
[{'answer': 'Egypt', 'provenance': [{'wikipedia_id': '21244', 'title': 'Nile', 'start_paragraph_id': 1, 'start_character': 522, 'end_paragraph_id': 1, 'end_character': 527, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]