Question:
Who was the head coach of the team FC Urartu in Aug, 2020?

Context:
 Volodymyr Pyatenko is the head coach of FC Urartu from Jan, 2013 to Jun, 2013. 
 Dmitri Gunko is the head coach of FC Urartu from Jun, 2022 to Dec, 2022. 
 Aleksandr Grigoryan is the head coach of FC Urartu from Nov, 2019 to Mar, 2021. 
 Arthur Voskanyan is the head coach of FC Urartu from Oct, 2016 to Aug, 2018. 
 Ilshat Faizulin is the head coach of FC Urartu from Aug, 2018 to Nov, 2019. 
 Robert Arzumanyan is the head coach of FC Urartu from Jul, 2021 to Jun, 2022.

Answer:
Aleksandr Grigoryan