Question: how many oar athletes are in the olympics
[{'answer': '168', 'provenance': [{'wikipedia_id': '51403753', 'title': 'Olympic Athletes from Russia at the 2018 Winter Olympics', 'start_paragraph_id': 13, 'start_character': 142, 'end_paragraph_id': 13, 'end_character': 145, 'bleu_score': 1.0, 'section': 'Section::::Background.:Russian doping allegations.:Official sanctions.\n'}]}]