Question: when did jack in the box first open
[{'answer': '1951', 'provenance': [{'wikipedia_id': '166778', 'title': 'Jack in the Box', 'start_paragraph_id': 1, 'start_character': 79, 'end_paragraph_id': 1, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '166778', 'title': 'Jack in the Box', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 653, 'bleu_score': 0.599036066879813, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1064715170666246479}, 'section': 'Section::::Abstract.'}]}]