Question: who is dr torres on grey's anatomy
[{'answer': 'Sara Ramirez', 'provenance': [{'wikipedia_id': '7687028', 'title': 'Callie Torres', 'start_paragraph_id': 1, 'start_character': 250, 'end_paragraph_id': 1, 'end_character': 262, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7687028', 'title': 'Callie Torres', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 562, 'bleu_score': 0.977397480575333, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5991299016709095366}, 'section': 'Section::::Abstract.'}]}]