system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
At a college graduation ceremony, each graduate is handed a diploma and sunflower. Aaron, Fiona, and Noor are three graduates. Only Fiona is allergic to sunflowers. As she exits the stage, Fiona sneezes but Aaron and Noor do not. Why does Fiona sneeze but not the other two?


assistant
Fiona is allergic to sunflowers while the other two are not. After she received a sunflower on the stage, it caused her to sneeze.