Question: who gets chief resident in grey's anatomy season 3
[{'answer': 'Callie', 'provenance': [{'wikipedia_id': '6173298', 'title': "Grey's Anatomy (season 3)", 'start_paragraph_id': 7, 'start_character': 927, 'end_paragraph_id': 7, 'end_character': 933, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}]