Why does Harry learn about the Room of Requirement in "Harry Potter and the Order of the Phoenix"?
Because Dobby the house-elf tells him about it.
<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 Room of Requirement in "Harry Potter and the Order of the Phoenix"? [/INST] Because Dobby the house-elf tells him about it. </s>