Question: miraculous tales of ladybug & cat noir season 2 episode 21 release
[{'answer': 'December 2018', 'provenance': [{'wikipedia_id': '52749974', 'title': 'List of Miraculous: Tales of Ladybug & Cat Noir episodes', 'start_paragraph_id': 3, 'start_character': 476, 'end_paragraph_id': 3, 'end_character': 489, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]