Question:
Who was the chair of GroenLinks in Jul, 2012?

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

Answer:
Question:
Who was the chair of GroenLinks in Jul, 2012?

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

Answer:
user
Heleen Weening
assistant
Question:
Who was the chair of GroenLinks in Jul, 2012?

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

Answer:
user
Rik Grashoff
Marjolein Meijer
Mirjam de Rijk
Katinka Eikelenboom
Ab Harrewijn
Eduard van Zuijlen
Marjan Lucas
Herman Meijer
Jeroen Postma
Ina Brouwer
Henk Nijhof
Marijke Vos
assistant
Question:
Who was the chair of GroenLinks in Jul, 2012?

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

Answer:
user
Heleen Weening
assistant