Question: who is the first king in saudi arabia
[{'answer': 'Ibn Saud', 'provenance': [{'wikipedia_id': '38208168', 'title': 'King of Saudi Arabia', 'start_paragraph_id': 3, 'start_character': 37, 'end_paragraph_id': 3, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]