Question: how many episodes are in the carrie diaries season 2
[{'answer': '13', 'provenance': [{'wikipedia_id': '39406568', 'title': 'The Carrie Diaries (season 2)', 'start_paragraph_id': 1, 'start_character': 77, 'end_paragraph_id': 1, 'end_character': 79, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]