Question: who leaves glee at the end of season 3
[{'answer': 'Rachel', 'provenance': [{'wikipedia_id': '31851861', 'title': 'Glee (season 3)', 'start_paragraph_id': 2, 'start_character': 644, 'end_paragraph_id': 2, 'end_character': 650, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]