Question: how many episodes are in season 2 of the last kingdom
[{'answer': '8', 'provenance': [{'wikipedia_id': '43780513', 'title': 'The Last Kingdom (TV series)', 'start_paragraph_id': 1, 'start_character': 497, 'end_paragraph_id': 1, 'end_character': 498, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]