Question: when was the last series of dancing on ice
[{'answer': '5 January 2014', 'provenance': [{'wikipedia_id': '3617148', 'title': 'Dancing on Ice', 'start_paragraph_id': 70, 'start_character': 53, 'end_paragraph_id': 70, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Main series results.:Series 9: All-Stars (2014).\n'}]}]