Question:
Who was the head coach of the team Brentford F.C. in Jan, 2017?

Context:
 Thomas Frank is the head coach of Brentford F.C. from Oct, 2018 to Dec, 2022. 
 Dean Smith is the head coach of Brentford F.C. from Nov, 2015 to Oct, 2018. 
 Mark Warburton is the head coach of Brentford F.C. from Dec, 2013 to May, 2015.

Answer:
Question:
Who was the head coach of the team Brentford F.C. in Jan, 2017?

Context:
 Thomas Frank is the head coach of Brentford F.C. from Oct, 2018 to Dec, 2022. 
 Dean Smith is the head coach of Brentford F.C. from Nov, 2015 to Oct, 2018. 
 Mark Warburton is the head coach of Brentford F.C. from Dec, 2013 to May, 2015.

Answer:
user
Dean Smith
assistant
Question:
Who was the head coach of the team Brentford F.C. in Jan, 2017?

Context:
 Thomas Frank is the head coach of Brentford F.C. from Oct, 2018 to Dec, 2022. 
 Dean Smith is the head coach of Brentford F.C. from Nov, 2015 to Oct, 2018. 
 Mark Warburton is the head coach of Brentford F.C. from Dec, 2013 to May, 2015.

Answer:
user
Mark Warburton
Thomas Frank
assistant
Question:
Who was the head coach of the team Brentford F.C. in Jan, 2017?

Context:
 Thomas Frank is the head coach of Brentford F.C. from Oct, 2018 to Dec, 2022. 
 Dean Smith is the head coach of Brentford F.C. from Nov, 2015 to Oct, 2018. 
 Mark Warburton is the head coach of Brentford F.C. from Dec, 2013 to May, 2015.

Answer:
user
Dean Smith
assistant