Question:
Who was the head of Cologne in Nov, 2010?

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

Answer:
Question:
Who was the head of Cologne in Nov, 2010?

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

Answer:
user
Jürgen Roters
assistant
Question:
Who was the head of Cologne in Nov, 2010?

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

Answer:
user
Ernst Schwering
John van Nes Ziegler
Fritz Schramma
Theo Burauen
Norbert Burger
Henriette Reker
Robert Görlinger
assistant
Question:
Who was the head of Cologne in Nov, 2010?

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

Answer:
user
Jürgen Roters
assistant