Question:
Who was the head of West Maas en Waal in Jun, 2017?

Context:
 Toon Maas is the head of the government of West Maas en Waal from Jan, 1991 to Jan, 1999. 
 Thomas Steenkamp is the head of the government of West Maas en Waal from Jan, 1999 to Jun, 2017. 
 Corry van Rhee-Oud Ammerveld is the head of the government of West Maas en Waal from Jun, 2017 to Nov, 2017. 
 Vincent van Neerbos is the head of the government of West Maas en Waal from Dec, 2017 to Dec, 2022.

Answer:
Question:
Who was the head of West Maas en Waal in Jun, 2017?

Context:
 Toon Maas is the head of the government of West Maas en Waal from Jan, 1991 to Jan, 1999. 
 Thomas Steenkamp is the head of the government of West Maas en Waal from Jan, 1999 to Jun, 2017. 
 Corry van Rhee-Oud Ammerveld is the head of the government of West Maas en Waal from Jun, 2017 to Nov, 2017. 
 Vincent van Neerbos is the head of the government of West Maas en Waal from Dec, 2017 to Dec, 2022.

Answer:
user
Corry van Rhee-Oud Ammerveld
assistant
Question:
Who was the head of West Maas en Waal in Jun, 2017?

Context:
 Toon Maas is the head of the government of West Maas en Waal from Jan, 1991 to Jan, 1999. 
 Thomas Steenkamp is the head of the government of West Maas en Waal from Jan, 1999 to Jun, 2017. 
 Corry van Rhee-Oud Ammerveld is the head of the government of West Maas en Waal from Jun, 2017 to Nov, 2017. 
 Vincent van Neerbos is the head of the government of West Maas en Waal from Dec, 2017 to Dec, 2022.

Answer:
user
Vincent van Neerbos
Toon Maas
Vincent van Neerbos
Thomas Steenkamp
Toon Maas
assistant
Question:
Who was the head of West Maas en Waal in Jun, 2017?

Context:
 Toon Maas is the head of the government of West Maas en Waal from Jan, 1991 to Jan, 1999. 
 Thomas Steenkamp is the head of the government of West Maas en Waal from Jan, 1999 to Jun, 2017. 
 Corry van Rhee-Oud Ammerveld is the head of the government of West Maas en Waal from Jun, 2017 to Nov, 2017. 
 Vincent van Neerbos is the head of the government of West Maas en Waal from Dec, 2017 to Dec, 2022.

Answer:
user
Corry van Rhee-Oud Ammerveld
assistant