Question: where did christina from grey's anatomy go
[{'answer': 'Zurich', 'provenance': [{'wikipedia_id': '7687021', 'title': 'Cristina Yang', 'start_paragraph_id': 13, 'start_character': 227, 'end_paragraph_id': 13, 'end_character': 233, 'bleu_score': 1.0, 'section': 'Section::::Storylines and character.\n'}]}, {'provenance': [{'wikipedia_id': '7687021', 'title': 'Cristina Yang', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 357, 'bleu_score': 0.8633097535562501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 68819645616174210}, 'section': 'Section::::Storylines and character.\n'}]}]