Why does Harry discover that he is a wizard in "Harry Potter and the Philosopher’s Stone"?
Hagrid tells him on his 11th birthday.
<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 discover that he is a wizard in "Harry Potter and the Philosopher’s Stone"? [/INST] Hagrid tells him on his 11th birthday. </s>