Question: how many episodes in season 2 of our girl
[{'answer': '5', 'provenance': [{'wikipedia_id': '38909754', 'title': 'Our Girl', 'start_paragraph_id': 2, 'start_character': 834, 'end_paragraph_id': 2, 'end_character': 835, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]