Which character is known for their association with the Triwizard Tournament and for their role as the head of the Department of International Magical Cooperation?
Barty Crouch Sr.
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> Which character is known for their association with the Triwizard Tournament and for their role as the head of the Department of International Magical Cooperation? [/INST] Barty Crouch Sr. </s>