Question:
Who was the head of Amstelveen in May, 2014?

Context:
 Otto van Diepen is the head of the government of Amstelveen from Jan, 1984 to Jan, 1997. 
 Dirk Rijnders is the head of the government of Amstelveen from Jan, 1955 to Jan, 1971. 
 Mirjam van 't Veld is the head of the government of Amstelveen from Jul, 2014 to Sep, 2017. 
 Pieter Beelaerts van Blokland is the head of the government of Amstelveen from Jan, 1971 to Jan, 1977. 
 Tjapko Poppens is the head of the government of Amstelveen from May, 2019 to Dec, 2022. 
 Wilhelm Herman Daniël Quarles van Ufford is the head of the government of Amstelveen from Jan, 1978 to Jan, 1984. 
 Harry Kamphuis is the head of the government of Amstelveen from Jan, 1997 to Jan, 2005. 
 Jan van Zanen is the head of the government of Amstelveen from Jan, 2005 to Dec, 2013. 
 Bas Eenhoorn is the head of the government of Amstelveen from Oct, 2017 to May, 2019. 
 Fred de Graaf is the head of the government of Amstelveen from Jan, 2014 to Jul, 2014.

Answer:
Question:
Who was the head of Amstelveen in May, 2014?

Context:
 Otto van Diepen is the head of the government of Amstelveen from Jan, 1984 to Jan, 1997. 
 Dirk Rijnders is the head of the government of Amstelveen from Jan, 1955 to Jan, 1971. 
 Mirjam van 't Veld is the head of the government of Amstelveen from Jul, 2014 to Sep, 2017. 
 Pieter Beelaerts van Blokland is the head of the government of Amstelveen from Jan, 1971 to Jan, 1977. 
 Tjapko Poppens is the head of the government of Amstelveen from May, 2019 to Dec, 2022. 
 Wilhelm Herman Daniël Quarles van Ufford is the head of the government of Amstelveen from Jan, 1978 to Jan, 1984. 
 Harry Kamphuis is the head of the government of Amstelveen from Jan, 1997 to Jan, 2005. 
 Jan van Zanen is the head of the government of Amstelveen from Jan, 2005 to Dec, 2013. 
 Bas Eenhoorn is the head of the government of Amstelveen from Oct, 2017 to May, 2019. 
 Fred de Graaf is the head of the government of Amstelveen from Jan, 2014 to Jul, 2014.

Answer:
user
Fred de Graaf
assistant
Question:
Who was the head of Amstelveen in May, 2014?

Context:
 Otto van Diepen is the head of the government of Amstelveen from Jan, 1984 to Jan, 1997. 
 Dirk Rijnders is the head of the government of Amstelveen from Jan, 1955 to Jan, 1971. 
 Mirjam van 't Veld is the head of the government of Amstelveen from Jul, 2014 to Sep, 2017. 
 Pieter Beelaerts van Blokland is the head of the government of Amstelveen from Jan, 1971 to Jan, 1977. 
 Tjapko Poppens is the head of the government of Amstelveen from May, 2019 to Dec, 2022. 
 Wilhelm Herman Daniël Quarles van Ufford is the head of the government of Amstelveen from Jan, 1978 to Jan, 1984. 
 Harry Kamphuis is the head of the government of Amstelveen from Jan, 1997 to Jan, 2005. 
 Jan van Zanen is the head of the government of Amstelveen from Jan, 2005 to Dec, 2013. 
 Bas Eenhoorn is the head of the government of Amstelveen from Oct, 2017 to May, 2019. 
 Fred de Graaf is the head of the government of Amstelveen from Jan, 2014 to Jul, 2014.

Answer:
user
Wilhelm Herman Daniël Quarles van Ufford
Harry Kamphuis
Mirjam van 't Veld
Otto van Diepen
Dirk Rijnders
Bas Eenhoorn
Pieter Beelaerts van Blokland
Tjapko Poppens
Jan van Zanen
assistant
Question:
Who was the head of Amstelveen in May, 2014?

Context:
 Otto van Diepen is the head of the government of Amstelveen from Jan, 1984 to Jan, 1997. 
 Dirk Rijnders is the head of the government of Amstelveen from Jan, 1955 to Jan, 1971. 
 Mirjam van 't Veld is the head of the government of Amstelveen from Jul, 2014 to Sep, 2017. 
 Pieter Beelaerts van Blokland is the head of the government of Amstelveen from Jan, 1971 to Jan, 1977. 
 Tjapko Poppens is the head of the government of Amstelveen from May, 2019 to Dec, 2022. 
 Wilhelm Herman Daniël Quarles van Ufford is the head of the government of Amstelveen from Jan, 1978 to Jan, 1984. 
 Harry Kamphuis is the head of the government of Amstelveen from Jan, 1997 to Jan, 2005. 
 Jan van Zanen is the head of the government of Amstelveen from Jan, 2005 to Dec, 2013. 
 Bas Eenhoorn is the head of the government of Amstelveen from Oct, 2017 to May, 2019. 
 Fred de Graaf is the head of the government of Amstelveen from Jan, 2014 to Jul, 2014.

Answer:
user
Fred de Graaf
assistant