Question: who is the current chairman of african union commission
[{'answer': 'Moussa Faki', 'provenance': [{'wikipedia_id': '1829392', 'title': 'Chairperson of the African Union Commission', 'start_paragraph_id': 1, 'start_character': 143, 'end_paragraph_id': 1, 'end_character': 154, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]