Question: when was oil first discovered in saudi arabia
[{'answer': '1938', 'provenance': [{'wikipedia_id': '27124188', 'title': 'History of the oil industry in Saudi Arabia', 'start_paragraph_id': 1, 'start_character': 109, 'end_paragraph_id': 1, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27124188', 'title': 'History of the oil industry in Saudi Arabia', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 147, 'bleu_score': 0.9271474438253491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5870482147346936469}, 'section': 'Section::::Abstract.'}]}]