What is the name of the Hufflepuff student who is Cedric Diggory's closest friend?
Cho Chang
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> What is the name of the Hufflepuff student who is Cedric Diggory's closest friend? [/INST] Cho Chang </s>