Question: a key characteristic feature of acute respiratory distress syndrome (ards) is
[{'answer': 'widespread inflammation in the lungs', 'provenance': [{'wikipedia_id': '482445', 'title': 'Acute respiratory distress syndrome', 'start_paragraph_id': 1, 'start_character': 108, 'end_paragraph_id': 1, 'end_character': 144, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]