Question:
Who was the head of Graz in Apr, 2021?

Context:
 Gustav Scherbaum is the head of the government of Graz from Feb, 1960 to Apr, 1973. 
 Elke Kahr is the head of the government of Graz from Nov, 2021 to Dec, 2022. 
 Anton Unterrain von Meysing is the head of the government of Graz from Jun, 1914 to Dec, 1917. 
 Siegfried Nagl is the head of the government of Graz from Jan, 2003 to Nov, 2021. 
 Franz Hasiba is the head of the government of Graz from Mar, 1983 to Jan, 1985. 
 Alfred Stingl is the head of the government of Graz from Jan, 1985 to Jan, 2003.

Answer:
Question:
Who was the head of Graz in Apr, 2021?

Context:
 Gustav Scherbaum is the head of the government of Graz from Feb, 1960 to Apr, 1973. 
 Elke Kahr is the head of the government of Graz from Nov, 2021 to Dec, 2022. 
 Anton Unterrain von Meysing is the head of the government of Graz from Jun, 1914 to Dec, 1917. 
 Siegfried Nagl is the head of the government of Graz from Jan, 2003 to Nov, 2021. 
 Franz Hasiba is the head of the government of Graz from Mar, 1983 to Jan, 1985. 
 Alfred Stingl is the head of the government of Graz from Jan, 1985 to Jan, 2003.

Answer:
user
Siegfried Nagl
assistant
Question:
Who was the head of Graz in Apr, 2021?

Context:
 Gustav Scherbaum is the head of the government of Graz from Feb, 1960 to Apr, 1973. 
 Elke Kahr is the head of the government of Graz from Nov, 2021 to Dec, 2022. 
 Anton Unterrain von Meysing is the head of the government of Graz from Jun, 1914 to Dec, 1917. 
 Siegfried Nagl is the head of the government of Graz from Jan, 2003 to Nov, 2021. 
 Franz Hasiba is the head of the government of Graz from Mar, 1983 to Jan, 1985. 
 Alfred Stingl is the head of the government of Graz from Jan, 1985 to Jan, 2003.

Answer:
user
Franz Hasiba
Gustav Scherbaum
Alfred Stingl
Elke Kahr
Anton Unterrain von Meysing
assistant
Question:
Who was the head of Graz in Apr, 2021?

Context:
 Gustav Scherbaum is the head of the government of Graz from Feb, 1960 to Apr, 1973. 
 Elke Kahr is the head of the government of Graz from Nov, 2021 to Dec, 2022. 
 Anton Unterrain von Meysing is the head of the government of Graz from Jun, 1914 to Dec, 1917. 
 Siegfried Nagl is the head of the government of Graz from Jan, 2003 to Nov, 2021. 
 Franz Hasiba is the head of the government of Graz from Mar, 1983 to Jan, 1985. 
 Alfred Stingl is the head of the government of Graz from Jan, 1985 to Jan, 2003.

Answer:
user
Siegfried Nagl
assistant