Question: how many episodes does hawaii five o season 8 have
[{'answer': '15', 'provenance': [{'wikipedia_id': '54900847', 'title': 'Hawaii Five-0 (2010 TV series, season 8)', 'start_paragraph_id': 51, 'start_character': 383, 'end_paragraph_id': 51, 'end_character': 385, 'bleu_score': 1.0, 'section': "Section::::Production.:Daniel Dae Kim's and Grace Park's departure controversies.\n"}]}]