Question: who comes back in season 14 of grey's anatomy
[{'answer': 'Megan Hunt', 'provenance': [{'wikipedia_id': '54041689', 'title': "Grey's Anatomy (season 14)", 'start_paragraph_id': 66, 'start_character': 736, 'end_paragraph_id': 66, 'end_character': 746, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Casting.\n'}]}]