Question:
Who was the head of state of Guyana in Feb, 2019?

Context:
 David A. Granger is the head of the state of Guyana from May, 2015 to Aug, 2020. 
 Donald Ramotar is the head of the state of Guyana from Dec, 2011 to May, 2015. 
 Irfaan Ali is the head of the state of Guyana from Aug, 2020 to Dec, 2022.

Answer:
Question:
Who was the head of state of Guyana in Feb, 2019?

Context:
 David A. Granger is the head of the state of Guyana from May, 2015 to Aug, 2020. 
 Donald Ramotar is the head of the state of Guyana from Dec, 2011 to May, 2015. 
 Irfaan Ali is the head of the state of Guyana from Aug, 2020 to Dec, 2022.

Answer:
user
David A. Granger
assistant
Question:
Who was the head of state of Guyana in Feb, 2019?

Context:
 David A. Granger is the head of the state of Guyana from May, 2015 to Aug, 2020. 
 Donald Ramotar is the head of the state of Guyana from Dec, 2011 to May, 2015. 
 Irfaan Ali is the head of the state of Guyana from Aug, 2020 to Dec, 2022.

Answer:
user
Donald Ramotar
Irfaan Ali
assistant
Question:
Who was the head of state of Guyana in Feb, 2019?

Context:
 David A. Granger is the head of the state of Guyana from May, 2015 to Aug, 2020. 
 Donald Ramotar is the head of the state of Guyana from Dec, 2011 to May, 2015. 
 Irfaan Ali is the head of the state of Guyana from Aug, 2020 to Dec, 2022.

Answer:
user
David A. Granger
assistant