Question:
Who was the chair of United Russia in Nov, 2018?

Context:
 Vladimir Putin is the chair of United Russia from May, 2008 to May, 2012. 
 Sergey Shoygu is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Mintimer Şäymief is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Boris Gryzlov is the chair of United Russia from Jan, 2002 to May, 2008. 
 Yury Luzhkov is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Dmitry Medvedev is the chair of United Russia from May, 2012 to Dec, 2022.

Answer:
Question:
Who was the chair of United Russia in Nov, 2018?

Context:
 Vladimir Putin is the chair of United Russia from May, 2008 to May, 2012. 
 Sergey Shoygu is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Mintimer Şäymief is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Boris Gryzlov is the chair of United Russia from Jan, 2002 to May, 2008. 
 Yury Luzhkov is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Dmitry Medvedev is the chair of United Russia from May, 2012 to Dec, 2022.

Answer:
user
Dmitry Medvedev
assistant
Question:
Who was the chair of United Russia in Nov, 2018?

Context:
 Vladimir Putin is the chair of United Russia from May, 2008 to May, 2012. 
 Sergey Shoygu is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Mintimer Şäymief is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Boris Gryzlov is the chair of United Russia from Jan, 2002 to May, 2008. 
 Yury Luzhkov is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Dmitry Medvedev is the chair of United Russia from May, 2012 to Dec, 2022.

Answer:
user
Vladimir Putin
Mintimer Şäymief
Sergey Shoygu
Yury Luzhkov
Boris Gryzlov
assistant
Question:
Who was the chair of United Russia in Nov, 2018?

Context:
 Vladimir Putin is the chair of United Russia from May, 2008 to May, 2012. 
 Sergey Shoygu is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Mintimer Şäymief is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Boris Gryzlov is the chair of United Russia from Jan, 2002 to May, 2008. 
 Yury Luzhkov is the chair of United Russia from Jan, 2001 to Jan, 2002. 
 Dmitry Medvedev is the chair of United Russia from May, 2012 to Dec, 2022.

Answer:
user
Dmitry Medvedev
assistant