Why does Harry learn about the Mirror of Erised in "Harry Potter and the Philosopher’s Stone"?
Dumbledore explains its purpose to him.
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> Why does Harry learn about the Mirror of Erised in "Harry Potter and the Philosopher’s Stone"? [/INST] Dumbledore explains its purpose to him. </s>