When Harry was learning the Patronus Charm, what happy memory did he initially use?
The first time he rode a broom
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> When Harry was learning the Patronus Charm, what happy memory did he initially use? [/INST] The first time he rode a broom </s>