Question:
Who was the head coach of the team Blackpool F.C. in Aug, 2019?

Context:
 Michael Appleton is the head coach of Blackpool F.C. from Jun, 2022 to Dec, 2022. 
 Gary Bowyer is the head coach of Blackpool F.C. from Jun, 2016 to Aug, 2018. 
 Simon Grayson is the head coach of Blackpool F.C. from Jul, 2019 to Feb, 2020. 
 Terry McPhillips is the head coach of Blackpool F.C. from Aug, 2018 to Jul, 2019. 
 Neil Critchley is the head coach of Blackpool F.C. from Mar, 2020 to Jun, 2022.

Answer:
Simon Grayson