Question: when did the atlantic ocean start to open
[{'answer': 'around 140 million years ago', 'provenance': [{'wikipedia_id': '37297196', 'title': 'Opening of the North Atlantic Ocean', 'start_paragraph_id': 3, 'start_character': 589, 'end_paragraph_id': 3, 'end_character': 617, 'bleu_score': 1.0, 'section': 'Section::::Description.\n'}]}, {'provenance': [{'wikipedia_id': '37297196', 'title': 'Opening of the North Atlantic Ocean', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 950, 'bleu_score': 0.986797956037998, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3107144693959752732}, 'section': 'Section::::Description.\n'}]}]