Question:
Who was the chair of State Duma in Sep, 2015?

Context:
 Gennadiy Seleznyov is the chair of State Duma from Jan, 1996 to Dec, 2003. 
 Sergey Naryshkin is the chair of State Duma from Dec, 2011 to Dec, 2016. 
 Vyacheslav Volodin is the chair of State Duma from Dec, 2016 to Dec, 2022. 
 Ivan Rybkin is the chair of State Duma from Jan, 1994 to Jan, 1996. 
 Boris Gryzlov is the chair of State Duma from Dec, 2003 to Dec, 2011.

Answer:
Question:
Who was the chair of State Duma in Sep, 2015?

Context:
 Gennadiy Seleznyov is the chair of State Duma from Jan, 1996 to Dec, 2003. 
 Sergey Naryshkin is the chair of State Duma from Dec, 2011 to Dec, 2016. 
 Vyacheslav Volodin is the chair of State Duma from Dec, 2016 to Dec, 2022. 
 Ivan Rybkin is the chair of State Duma from Jan, 1994 to Jan, 1996. 
 Boris Gryzlov is the chair of State Duma from Dec, 2003 to Dec, 2011.

Answer:
user
Sergey Naryshkin
assistant
Question:
Who was the chair of State Duma in Sep, 2015?

Context:
 Gennadiy Seleznyov is the chair of State Duma from Jan, 1996 to Dec, 2003. 
 Sergey Naryshkin is the chair of State Duma from Dec, 2011 to Dec, 2016. 
 Vyacheslav Volodin is the chair of State Duma from Dec, 2016 to Dec, 2022. 
 Ivan Rybkin is the chair of State Duma from Jan, 1994 to Jan, 1996. 
 Boris Gryzlov is the chair of State Duma from Dec, 2003 to Dec, 2011.

Answer:
user
Vyacheslav Volodin
Ivan Rybkin
Boris Gryzlov
Gennadiy Seleznyov
assistant
Question:
Who was the chair of State Duma in Sep, 2015?

Context:
 Gennadiy Seleznyov is the chair of State Duma from Jan, 1996 to Dec, 2003. 
 Sergey Naryshkin is the chair of State Duma from Dec, 2011 to Dec, 2016. 
 Vyacheslav Volodin is the chair of State Duma from Dec, 2016 to Dec, 2022. 
 Ivan Rybkin is the chair of State Duma from Jan, 1994 to Jan, 1996. 
 Boris Gryzlov is the chair of State Duma from Dec, 2003 to Dec, 2011.

Answer:
user
Sergey Naryshkin
assistant