Question:
Who was the chair of Lega Nord in Sep, 1999?

Context:
 Marilena Marin is the chair of Lega Nord from Jan, 1989 to Jan, 1991. 
 Luciano Gasperini is the chair of Lega Nord from Jan, 2002 to Jan, 2005. 
 Stefano Stefani is the chair of Lega Nord from Jan, 1995 to Jan, 2002. 
 Angelo Alessandri is the chair of Lega Nord from Jan, 2005 to Jan, 2012. 
 Umberto Bossi is the chair of Lega Nord from Jan, 1989 to Jan, 2012. 
 Matteo Salvini is the chair of Lega Nord from Jan, 2013 to Dec, 2022. 
 Franco Rocchetta is the chair of Lega Nord from Jan, 1991 to Jan, 1994.

Answer:
Question:
Who was the chair of Lega Nord in Sep, 1999?

Context:
 Marilena Marin is the chair of Lega Nord from Jan, 1989 to Jan, 1991. 
 Luciano Gasperini is the chair of Lega Nord from Jan, 2002 to Jan, 2005. 
 Stefano Stefani is the chair of Lega Nord from Jan, 1995 to Jan, 2002. 
 Angelo Alessandri is the chair of Lega Nord from Jan, 2005 to Jan, 2012. 
 Umberto Bossi is the chair of Lega Nord from Jan, 1989 to Jan, 2012. 
 Matteo Salvini is the chair of Lega Nord from Jan, 2013 to Dec, 2022. 
 Franco Rocchetta is the chair of Lega Nord from Jan, 1991 to Jan, 1994.

Answer:
user
Stefano Stefani
assistant
Question:
Who was the chair of Lega Nord in Sep, 1999?

Context:
 Marilena Marin is the chair of Lega Nord from Jan, 1989 to Jan, 1991. 
 Luciano Gasperini is the chair of Lega Nord from Jan, 2002 to Jan, 2005. 
 Stefano Stefani is the chair of Lega Nord from Jan, 1995 to Jan, 2002. 
 Angelo Alessandri is the chair of Lega Nord from Jan, 2005 to Jan, 2012. 
 Umberto Bossi is the chair of Lega Nord from Jan, 1989 to Jan, 2012. 
 Matteo Salvini is the chair of Lega Nord from Jan, 2013 to Dec, 2022. 
 Franco Rocchetta is the chair of Lega Nord from Jan, 1991 to Jan, 1994.

Answer:
user
Luciano Gasperini
Marilena Marin
Franco Rocchetta
Matteo Salvini
Angelo Alessandri
assistant
Question:
Who was the chair of Lega Nord in Sep, 1999?

Context:
 Marilena Marin is the chair of Lega Nord from Jan, 1989 to Jan, 1991. 
 Luciano Gasperini is the chair of Lega Nord from Jan, 2002 to Jan, 2005. 
 Stefano Stefani is the chair of Lega Nord from Jan, 1995 to Jan, 2002. 
 Angelo Alessandri is the chair of Lega Nord from Jan, 2005 to Jan, 2012. 
 Umberto Bossi is the chair of Lega Nord from Jan, 1989 to Jan, 2012. 
 Matteo Salvini is the chair of Lega Nord from Jan, 2013 to Dec, 2022. 
 Franco Rocchetta is the chair of Lega Nord from Jan, 1991 to Jan, 1994.

Answer:
user
Stefano Stefani
assistant