Question:
Who was the head of Mainz in Mar, 2012?

Context:
 Günter Beck is the head of the government of Mainz from Jan, 2012 to Apr, 2012. 
 Jockel Fuchs is the head of the government of Mainz from Jan, 1965 to Jan, 1987. 
 Michael Ebling is the head of the government of Mainz from Apr, 2012 to Dec, 2022. 
 Franz Stein is the head of the government of Mainz from Jan, 1949 to Jan, 1965. 
 Hermann-Hartmut Weyel is the head of the government of Mainz from Jan, 1987 to Jan, 1997. 
 Jens Beutel is the head of the government of Mainz from Jan, 1997 to Dec, 2011.

Answer:
Question:
Who was the head of Mainz in Mar, 2012?

Context:
 Günter Beck is the head of the government of Mainz from Jan, 2012 to Apr, 2012. 
 Jockel Fuchs is the head of the government of Mainz from Jan, 1965 to Jan, 1987. 
 Michael Ebling is the head of the government of Mainz from Apr, 2012 to Dec, 2022. 
 Franz Stein is the head of the government of Mainz from Jan, 1949 to Jan, 1965. 
 Hermann-Hartmut Weyel is the head of the government of Mainz from Jan, 1987 to Jan, 1997. 
 Jens Beutel is the head of the government of Mainz from Jan, 1997 to Dec, 2011.

Answer:
user
Günter Beck
assistant
Question:
Who was the head of Mainz in Mar, 2012?

Context:
 Günter Beck is the head of the government of Mainz from Jan, 2012 to Apr, 2012. 
 Jockel Fuchs is the head of the government of Mainz from Jan, 1965 to Jan, 1987. 
 Michael Ebling is the head of the government of Mainz from Apr, 2012 to Dec, 2022. 
 Franz Stein is the head of the government of Mainz from Jan, 1949 to Jan, 1965. 
 Hermann-Hartmut Weyel is the head of the government of Mainz from Jan, 1987 to Jan, 1997. 
 Jens Beutel is the head of the government of Mainz from Jan, 1997 to Dec, 2011.

Answer:
user
Hermann-Hartmut Weyel
Michael Ebling
Jockel Fuchs
Franz Stein
Jens Beutel
assistant
Question:
Who was the head of Mainz in Mar, 2012?

Context:
 Günter Beck is the head of the government of Mainz from Jan, 2012 to Apr, 2012. 
 Jockel Fuchs is the head of the government of Mainz from Jan, 1965 to Jan, 1987. 
 Michael Ebling is the head of the government of Mainz from Apr, 2012 to Dec, 2022. 
 Franz Stein is the head of the government of Mainz from Jan, 1949 to Jan, 1965. 
 Hermann-Hartmut Weyel is the head of the government of Mainz from Jan, 1987 to Jan, 1997. 
 Jens Beutel is the head of the government of Mainz from Jan, 1997 to Dec, 2011.

Answer:
user
Günter Beck
assistant