Question: how many episodes of jack irish season 2
[{'answer': '6', 'provenance': [{'wikipedia_id': '34074484', 'title': 'Jack Irish', 'start_paragraph_id': 3, 'start_character': 557, 'end_paragraph_id': 3, 'end_character': 558, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]