Question: who won the bbc african footballer of the year 2017
[{'answer': 'Mohamed Salah', 'provenance': [{'wikipedia_id': '15328575', 'title': 'BBC African Footballer of the Year', 'start_paragraph_id': 4, 'start_character': 95, 'end_paragraph_id': 4, 'end_character': 108, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]