Question: rsv disease is caused by the respiratory syncytial virus (rsv). rsv is a(n)
[{'answer': 'syncytial virus', 'provenance': [{'wikipedia_id': '477489', 'title': 'Human orthopneumovirus', 'start_paragraph_id': 1, 'start_character': 51, 'end_paragraph_id': 1, 'end_character': 66, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '477489', 'title': 'Human orthopneumovirus', 'start_paragraph_id': 1, 'start_character': 24, 'end_paragraph_id': 1, 'end_character': 648, 'bleu_score': 0.977397480575333, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5457540863769532062}, 'section': 'Section::::Abstract.'}]}]