Question:
Who was the chair of University of Tokyo in Jun, 2021?

Context:
 Junichi Hamada is the chair of University of Tokyo from Apr, 2009 to Mar, 2015. 
 Teruo Fujii is the chair of University of Tokyo from Apr, 2021 to Dec, 2022. 
 Makoto Gonokami is the chair of University of Tokyo from Apr, 2015 to Mar, 2021.

Answer:
Teruo Fujii