Question: who sang the song at the end of grey's anatomy
[{'answer': 'Sara Ramirez', 'provenance': [{'wikipedia_id': '31294286', 'title': 'Song Beneath the Song', 'start_paragraph_id': 2, 'start_character': 43, 'end_paragraph_id': 2, 'end_character': 55, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]