Question: what kind of guns do they use in the olympics
[{'answer': '. 22 Long Rifle'}, {'provenance': [{'wikipedia_id': '4405', 'title': 'Biathlon', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 650, 'bleu_score': 0.7094630599617291, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13991571204211626241}, 'section': 'Section::::History.\n'}]}]