Question:
Who was the head coach of the team FC Luzern in May, 2020?

Context:
 Mario Frick is the head coach of FC Luzern from Dec, 2021 to Dec, 2022. 
 René Weiler is the head coach of FC Luzern from Jun, 2018 to Feb, 2019. 
 Fabio Celestini is the head coach of FC Luzern from Jan, 2020 to Nov, 2021.

Answer:
Question:
Who was the head coach of the team FC Luzern in May, 2020?

Context:
 Mario Frick is the head coach of FC Luzern from Dec, 2021 to Dec, 2022. 
 René Weiler is the head coach of FC Luzern from Jun, 2018 to Feb, 2019. 
 Fabio Celestini is the head coach of FC Luzern from Jan, 2020 to Nov, 2021.

Answer:
user
Fabio Celestini
assistant
Question:
Who was the head coach of the team FC Luzern in May, 2020?

Context:
 Mario Frick is the head coach of FC Luzern from Dec, 2021 to Dec, 2022. 
 René Weiler is the head coach of FC Luzern from Jun, 2018 to Feb, 2019. 
 Fabio Celestini is the head coach of FC Luzern from Jan, 2020 to Nov, 2021.

Answer:
user
René Weiler
Mario Frick
assistant
Question:
Who was the head coach of the team FC Luzern in May, 2020?

Context:
 Mario Frick is the head coach of FC Luzern from Dec, 2021 to Dec, 2022. 
 René Weiler is the head coach of FC Luzern from Jun, 2018 to Feb, 2019. 
 Fabio Celestini is the head coach of FC Luzern from Jan, 2020 to Nov, 2021.

Answer:
user
Fabio Celestini
assistant