Question:
Who was the chair of Progressive Alliance of Socialists and Democrats in Dec, 2016?

Context:
 Iratxe García is the chair of Progressive Alliance of Socialists and Democrats from Jul, 2019 to Dec, 2022. 
 Udo Bullmann is the chair of Progressive Alliance of Socialists and Democrats from Mar, 2018 to Jul, 2019. 
 Gianni Pittella is the chair of Progressive Alliance of Socialists and Democrats from Jul, 2014 to Mar, 2018. 
 Hannes Swoboda is the chair of Progressive Alliance of Socialists and Democrats from Jan, 2012 to Jun, 2014. 
 Martin Schulz is the chair of Progressive Alliance of Socialists and Democrats from Jun, 2014 to Jun, 2014.

Answer:
Question:
Who was the chair of Progressive Alliance of Socialists and Democrats in Dec, 2016?

Context:
 Iratxe García is the chair of Progressive Alliance of Socialists and Democrats from Jul, 2019 to Dec, 2022. 
 Udo Bullmann is the chair of Progressive Alliance of Socialists and Democrats from Mar, 2018 to Jul, 2019. 
 Gianni Pittella is the chair of Progressive Alliance of Socialists and Democrats from Jul, 2014 to Mar, 2018. 
 Hannes Swoboda is the chair of Progressive Alliance of Socialists and Democrats from Jan, 2012 to Jun, 2014. 
 Martin Schulz is the chair of Progressive Alliance of Socialists and Democrats from Jun, 2014 to Jun, 2014.

Answer:
user
Gianni Pittella
assistant
Question:
Who was the chair of Progressive Alliance of Socialists and Democrats in Dec, 2016?

Context:
 Iratxe García is the chair of Progressive Alliance of Socialists and Democrats from Jul, 2019 to Dec, 2022. 
 Udo Bullmann is the chair of Progressive Alliance of Socialists and Democrats from Mar, 2018 to Jul, 2019. 
 Gianni Pittella is the chair of Progressive Alliance of Socialists and Democrats from Jul, 2014 to Mar, 2018. 
 Hannes Swoboda is the chair of Progressive Alliance of Socialists and Democrats from Jan, 2012 to Jun, 2014. 
 Martin Schulz is the chair of Progressive Alliance of Socialists and Democrats from Jun, 2014 to Jun, 2014.

Answer:
user
Udo Bullmann
Iratxe García
Martin Schulz
Hannes Swoboda
assistant
Question:
Who was the chair of Progressive Alliance of Socialists and Democrats in Dec, 2016?

Context:
 Iratxe García is the chair of Progressive Alliance of Socialists and Democrats from Jul, 2019 to Dec, 2022. 
 Udo Bullmann is the chair of Progressive Alliance of Socialists and Democrats from Mar, 2018 to Jul, 2019. 
 Gianni Pittella is the chair of Progressive Alliance of Socialists and Democrats from Jul, 2014 to Mar, 2018. 
 Hannes Swoboda is the chair of Progressive Alliance of Socialists and Democrats from Jan, 2012 to Jun, 2014. 
 Martin Schulz is the chair of Progressive Alliance of Socialists and Democrats from Jun, 2014 to Jun, 2014.

Answer:
user
Gianni Pittella
assistant