Question: who is the current leader of saudi arabia 2017
[{'answer': 'Salman', 'provenance': [{'wikipedia_id': '38208168', 'title': 'King of Saudi Arabia', 'start_paragraph_id': 6, 'start_character': 114, 'end_paragraph_id': 6, 'end_character': 120, 'bleu_score': 1.0, 'section': 'Section::::Succession.\n'}]}]