Question: who does alex marry on grey's anatomy
[{'answer': 'Izzie', 'provenance': [{'wikipedia_id': '7687023', 'title': 'Alex Karev', 'start_paragraph_id': 1, 'start_character': 405, 'end_paragraph_id': 1, 'end_character': 410, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7687023', 'title': 'Alex Karev', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 739, 'bleu_score': 0.9845548242372031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9007816527914802173}, 'section': 'Section::::Storylines.\n'}]}]