Question:
Who was the chair of GroenLinks in Dec, 2021?

Context:
 Marjan Lucas is the chair of GroenLinks from May, 1994 to Jan, 1995. 
 Rik Grashoff is the chair of GroenLinks from Mar, 2013 to May, 2015. 
 Herman Meijer is the chair of GroenLinks from Feb, 2003 to Apr, 2006. 
 Marijke Vos is the chair of GroenLinks from Nov, 1990 to May, 1994. 
 Jeroen Postma is the chair of GroenLinks from Jun, 2018 to Apr, 2019. 
 Ab Harrewijn is the chair of GroenLinks from Jan, 1995 to May, 1998. 
 Mirjam de Rijk is the chair of GroenLinks from Feb, 1999 to Feb, 2003. 
 Katinka Eikelenboom is the chair of GroenLinks from Apr, 2019 to Dec, 2022. 
 Heleen Weening is the chair of GroenLinks from Feb, 2012 to Oct, 2012. 
 Ina Brouwer is the chair of GroenLinks from May, 1998 to Feb, 1999. 
 Marjolein Meijer is the chair of GroenLinks from May, 2015 to Apr, 2016. 
 Henk Nijhof is the chair of GroenLinks from May, 2006 to Feb, 2007. 
 Eduard van Zuijlen is the chair of GroenLinks from Oct, 2012 to Mar, 2013.

Answer:
Question:
Who was the chair of GroenLinks in Dec, 2021?

Context:
 Marjan Lucas is the chair of GroenLinks from May, 1994 to Jan, 1995. 
 Rik Grashoff is the chair of GroenLinks from Mar, 2013 to May, 2015. 
 Herman Meijer is the chair of GroenLinks from Feb, 2003 to Apr, 2006. 
 Marijke Vos is the chair of GroenLinks from Nov, 1990 to May, 1994. 
 Jeroen Postma is the chair of GroenLinks from Jun, 2018 to Apr, 2019. 
 Ab Harrewijn is the chair of GroenLinks from Jan, 1995 to May, 1998. 
 Mirjam de Rijk is the chair of GroenLinks from Feb, 1999 to Feb, 2003. 
 Katinka Eikelenboom is the chair of GroenLinks from Apr, 2019 to Dec, 2022. 
 Heleen Weening is the chair of GroenLinks from Feb, 2012 to Oct, 2012. 
 Ina Brouwer is the chair of GroenLinks from May, 1998 to Feb, 1999. 
 Marjolein Meijer is the chair of GroenLinks from May, 2015 to Apr, 2016. 
 Henk Nijhof is the chair of GroenLinks from May, 2006 to Feb, 2007. 
 Eduard van Zuijlen is the chair of GroenLinks from Oct, 2012 to Mar, 2013.

Answer:
user
Katinka Eikelenboom
assistant
Question:
Who was the chair of GroenLinks in Dec, 2021?

Context:
 Marjan Lucas is the chair of GroenLinks from May, 1994 to Jan, 1995. 
 Rik Grashoff is the chair of GroenLinks from Mar, 2013 to May, 2015. 
 Herman Meijer is the chair of GroenLinks from Feb, 2003 to Apr, 2006. 
 Marijke Vos is the chair of GroenLinks from Nov, 1990 to May, 1994. 
 Jeroen Postma is the chair of GroenLinks from Jun, 2018 to Apr, 2019. 
 Ab Harrewijn is the chair of GroenLinks from Jan, 1995 to May, 1998. 
 Mirjam de Rijk is the chair of GroenLinks from Feb, 1999 to Feb, 2003. 
 Katinka Eikelenboom is the chair of GroenLinks from Apr, 2019 to Dec, 2022. 
 Heleen Weening is the chair of GroenLinks from Feb, 2012 to Oct, 2012. 
 Ina Brouwer is the chair of GroenLinks from May, 1998 to Feb, 1999. 
 Marjolein Meijer is the chair of GroenLinks from May, 2015 to Apr, 2016. 
 Henk Nijhof is the chair of GroenLinks from May, 2006 to Feb, 2007. 
 Eduard van Zuijlen is the chair of GroenLinks from Oct, 2012 to Mar, 2013.

Answer:
user
Rik Grashoff
Marjolein Meijer
Mirjam de Rijk
Ab Harrewijn
Eduard van Zuijlen
Marjan Lucas
Herman Meijer
Jeroen Postma
Ina Brouwer
Henk Nijhof
Heleen Weening
Marijke Vos
assistant
Question:
Who was the chair of GroenLinks in Dec, 2021?

Context:
 Marjan Lucas is the chair of GroenLinks from May, 1994 to Jan, 1995. 
 Rik Grashoff is the chair of GroenLinks from Mar, 2013 to May, 2015. 
 Herman Meijer is the chair of GroenLinks from Feb, 2003 to Apr, 2006. 
 Marijke Vos is the chair of GroenLinks from Nov, 1990 to May, 1994. 
 Jeroen Postma is the chair of GroenLinks from Jun, 2018 to Apr, 2019. 
 Ab Harrewijn is the chair of GroenLinks from Jan, 1995 to May, 1998. 
 Mirjam de Rijk is the chair of GroenLinks from Feb, 1999 to Feb, 2003. 
 Katinka Eikelenboom is the chair of GroenLinks from Apr, 2019 to Dec, 2022. 
 Heleen Weening is the chair of GroenLinks from Feb, 2012 to Oct, 2012. 
 Ina Brouwer is the chair of GroenLinks from May, 1998 to Feb, 1999. 
 Marjolein Meijer is the chair of GroenLinks from May, 2015 to Apr, 2016. 
 Henk Nijhof is the chair of GroenLinks from May, 2006 to Feb, 2007. 
 Eduard van Zuijlen is the chair of GroenLinks from Oct, 2012 to Mar, 2013.

Answer:
user
Katinka Eikelenboom
assistant