Question:
Who was the head coach of the team TSG 1899 Hoffenheim in Apr, 2020?

Context:
 Alfred Schreuder is the head coach of TSG 1899 Hoffenheim from Jul, 2019 to Jun, 2020. 
 Julian Nagelsmann is the head coach of TSG 1899 Hoffenheim from Feb, 2016 to Jun, 2019. 
 Sebastian Hoeneß is the head coach of TSG 1899 Hoffenheim from Jul, 2020 to Jun, 2022. 
 André Breitenreiter is the head coach of TSG 1899 Hoffenheim from Jul, 2022 to Dec, 2022. 
 Matthias Kaltenbach is the head coach of TSG 1899 Hoffenheim from Jun, 2020 to Jul, 2020.

Answer:
Alfred Schreuder