question: What are some other causes of airway obstruction ?
answer: foreign body aspiration , tracheal stenosis or laryngotracheomalacia , vascular rings , enlarged lymph nodes or neck masses
turker_answer: Some other causes of airway obstruction are foreign body aspiration , tracheal stenosis or laryngotracheomalacia , vascular rings , enlarged lymph nodes or neck masses .
rule-based: Some other causes of airway obstruction are foreign body aspiration , tracheal stenosis or laryngotracheomalacia , vascular rings , enlarged lymph nodes or neck masses .