Question: what is the newest winter olympic sport added
[{'answer': 'curling', 'provenance': [{'wikipedia_id': '650360', 'title': 'Olympic sports', 'start_paragraph_id': 2, 'start_character': 701, 'end_paragraph_id': 2, 'end_character': 708, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '650360', 'title': 'Olympic sports', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 216, 'bleu_score': 0.9493253852526031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10453019523520529933}, 'section': 'Section::::Changes in Olympic sports.\n'}]}]