Question: what season does sarah come back in arrow
[{'answer': 'season two', 'provenance': [{'wikipedia_id': '45244123', 'title': 'Sara Lance', 'start_paragraph_id': 5, 'start_character': 345, 'end_paragraph_id': 5, 'end_character': 355, 'bleu_score': 1.0, 'section': 'Section::::Appearances.:"Arrow".\n'}]}]