Question:
Who was the chair of Public Affairs in Mar, 2011?

Context:
 Vít Bárta is the chair of Public Affairs from Jan, 2013 to Jan, 2014. 
 Stanislava Moravcová is the chair of Public Affairs from Jan, 2003 to Jan, 2005. 
 Jaroslav Škárka is the chair of Public Affairs from Jan, 2005 to Jan, 2009. 
 Radek John is the chair of Public Affairs from Jan, 2009 to Jan, 2013.

Answer:
Question:
Who was the chair of Public Affairs in Mar, 2011?

Context:
 Vít Bárta is the chair of Public Affairs from Jan, 2013 to Jan, 2014. 
 Stanislava Moravcová is the chair of Public Affairs from Jan, 2003 to Jan, 2005. 
 Jaroslav Škárka is the chair of Public Affairs from Jan, 2005 to Jan, 2009. 
 Radek John is the chair of Public Affairs from Jan, 2009 to Jan, 2013.

Answer:
user
Radek John
assistant
Question:
Who was the chair of Public Affairs in Mar, 2011?

Context:
 Vít Bárta is the chair of Public Affairs from Jan, 2013 to Jan, 2014. 
 Stanislava Moravcová is the chair of Public Affairs from Jan, 2003 to Jan, 2005. 
 Jaroslav Škárka is the chair of Public Affairs from Jan, 2005 to Jan, 2009. 
 Radek John is the chair of Public Affairs from Jan, 2009 to Jan, 2013.

Answer:
user
Jaroslav Škárka
Stanislava Moravcová
Vít Bárta
assistant
Question:
Who was the chair of Public Affairs in Mar, 2011?

Context:
 Vít Bárta is the chair of Public Affairs from Jan, 2013 to Jan, 2014. 
 Stanislava Moravcová is the chair of Public Affairs from Jan, 2003 to Jan, 2005. 
 Jaroslav Škárka is the chair of Public Affairs from Jan, 2005 to Jan, 2009. 
 Radek John is the chair of Public Affairs from Jan, 2009 to Jan, 2013.

Answer:
user
Radek John
assistant