Question:
Who was the head of Cologne in Oct, 2020?

Context:
 Robert Görlinger is the head of the government of Cologne from Nov, 1950 to Nov, 1951. 
 Norbert Burger is the head of the government of Cologne from Oct, 1980 to Sep, 1999. 
 Theo Burauen is the head of the government of Cologne from Nov, 1956 to Dec, 1973. 
 John van Nes Ziegler is the head of the government of Cologne from Dec, 1973 to Oct, 1980. 
 Henriette Reker is the head of the government of Cologne from Oct, 2015 to Dec, 2022. 
 Fritz Schramma is the head of the government of Cologne from Sep, 2000 to Oct, 2009. 
 Jürgen Roters is the head of the government of Cologne from Oct, 2009 to Oct, 2015. 
 Ernst Schwering is the head of the government of Cologne from Nov, 1951 to Nov, 1956.

Answer:
Question:
Who was the head of Cologne in Oct, 2020?

Context:
 Robert Görlinger is the head of the government of Cologne from Nov, 1950 to Nov, 1951. 
 Norbert Burger is the head of the government of Cologne from Oct, 1980 to Sep, 1999. 
 Theo Burauen is the head of the government of Cologne from Nov, 1956 to Dec, 1973. 
 John van Nes Ziegler is the head of the government of Cologne from Dec, 1973 to Oct, 1980. 
 Henriette Reker is the head of the government of Cologne from Oct, 2015 to Dec, 2022. 
 Fritz Schramma is the head of the government of Cologne from Sep, 2000 to Oct, 2009. 
 Jürgen Roters is the head of the government of Cologne from Oct, 2009 to Oct, 2015. 
 Ernst Schwering is the head of the government of Cologne from Nov, 1951 to Nov, 1956.

Answer:
user
Henriette Reker
assistant
Question:
Who was the head of Cologne in Oct, 2020?

Context:
 Robert Görlinger is the head of the government of Cologne from Nov, 1950 to Nov, 1951. 
 Norbert Burger is the head of the government of Cologne from Oct, 1980 to Sep, 1999. 
 Theo Burauen is the head of the government of Cologne from Nov, 1956 to Dec, 1973. 
 John van Nes Ziegler is the head of the government of Cologne from Dec, 1973 to Oct, 1980. 
 Henriette Reker is the head of the government of Cologne from Oct, 2015 to Dec, 2022. 
 Fritz Schramma is the head of the government of Cologne from Sep, 2000 to Oct, 2009. 
 Jürgen Roters is the head of the government of Cologne from Oct, 2009 to Oct, 2015. 
 Ernst Schwering is the head of the government of Cologne from Nov, 1951 to Nov, 1956.

Answer:
user
Ernst Schwering
John van Nes Ziegler
Fritz Schramma
Jürgen Roters
Theo Burauen
Norbert Burger
Robert Görlinger
assistant
Question:
Who was the head of Cologne in Oct, 2020?

Context:
 Robert Görlinger is the head of the government of Cologne from Nov, 1950 to Nov, 1951. 
 Norbert Burger is the head of the government of Cologne from Oct, 1980 to Sep, 1999. 
 Theo Burauen is the head of the government of Cologne from Nov, 1956 to Dec, 1973. 
 John van Nes Ziegler is the head of the government of Cologne from Dec, 1973 to Oct, 1980. 
 Henriette Reker is the head of the government of Cologne from Oct, 2015 to Dec, 2022. 
 Fritz Schramma is the head of the government of Cologne from Sep, 2000 to Oct, 2009. 
 Jürgen Roters is the head of the government of Cologne from Oct, 2009 to Oct, 2015. 
 Ernst Schwering is the head of the government of Cologne from Nov, 1951 to Nov, 1956.

Answer:
user
Henriette Reker
assistant