subquestion: What is the city where the record of the most words on a postage stamp was set in 2024
answer: Mechelen, Belgium
subquestion: Who is the mayor of Mechelen?
answer: Bart Somers
subquestion: Which university does Bart Somers go to?
answer: KU Leuven
Final answer: KU Leuven
Katholieke Universiteit Leuven