Question: who dies in the plane crash in grey's anatomy season 8
[{'answer': 'Lexie', 'provenance': [{'wikipedia_id': '35614755', 'title': "Flight (Grey's Anatomy)", 'start_paragraph_id': 1, 'start_character': 494, 'end_paragraph_id': 1, 'end_character': 499, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '35614755', 'title': "Flight (Grey's Anatomy)", 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1169, 'bleu_score': 0.990171692033262, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1867888267396939183}, 'section': 'Section::::Plot.\n'}]}]