Question: acute viral infection of upper and lower respiratory tracts is called
[{'answer': 'Influenza', 'provenance': [{'wikipedia_id': '964371', 'title': 'Lower respiratory tract infection', 'start_paragraph_id': 2, 'start_character': 140, 'end_paragraph_id': 2, 'end_character': 149, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '964371', 'title': 'Lower respiratory tract infection', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 201, 'bleu_score': 0.856743586582392, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7545688294414756326}, 'section': 'Section::::Abstract.'}]}]