Question: who gets fired on grey's anatomy season 6
[{'answer': 'Izzie', 'provenance': [{'wikipedia_id': '23492454', 'title': "Grey's Anatomy (season 6)", 'start_paragraph_id': 1, 'start_character': 539, 'end_paragraph_id': 1, 'end_character': 544, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'April Kepner', 'provenance': [{'wikipedia_id': '23492454', 'title': "Grey's Anatomy (season 6)", 'start_paragraph_id': 7, 'start_character': 201, 'end_paragraph_id': 7, 'end_character': 213, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}]