What is the name of the ghost who haunts the girls' bathroom on the second floor of Hogwarts?
Moaning Myrtle
<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 ghost who haunts the girls' bathroom on the second floor of Hogwarts? [/INST] Moaning Myrtle </s>