Question:
Who was the head of Moscow in Aug, 2006?

Context:
 Gavriil Kharitonovich Popov is the head of the government of Moscow from Jan, 1991 to Jan, 1992. 
 Sergey Sobyanin is the head of the government of Moscow from Oct, 2010 to Dec, 2022. 
 Yury Luzhkov is the head of the government of Moscow from Jan, 1992 to Jan, 2010.

Answer:
Question:
Who was the head of Moscow in Aug, 2006?

Context:
 Gavriil Kharitonovich Popov is the head of the government of Moscow from Jan, 1991 to Jan, 1992. 
 Sergey Sobyanin is the head of the government of Moscow from Oct, 2010 to Dec, 2022. 
 Yury Luzhkov is the head of the government of Moscow from Jan, 1992 to Jan, 2010.

Answer:
user
Yury Luzhkov
assistant
Question:
Who was the head of Moscow in Aug, 2006?

Context:
 Gavriil Kharitonovich Popov is the head of the government of Moscow from Jan, 1991 to Jan, 1992. 
 Sergey Sobyanin is the head of the government of Moscow from Oct, 2010 to Dec, 2022. 
 Yury Luzhkov is the head of the government of Moscow from Jan, 1992 to Jan, 2010.

Answer:
user
Gavriil Kharitonovich Popov
Sergey Sobyanin
assistant
Question:
Who was the head of Moscow in Aug, 2006?

Context:
 Gavriil Kharitonovich Popov is the head of the government of Moscow from Jan, 1991 to Jan, 1992. 
 Sergey Sobyanin is the head of the government of Moscow from Oct, 2010 to Dec, 2022. 
 Yury Luzhkov is the head of the government of Moscow from Jan, 1992 to Jan, 2010.

Answer:
user
Yury Luzhkov
assistant