Question:
Who was the head of Navarre in Apr, 2015?

Context:
 María Chivite is the head of the government of Navarre from Aug, 2019 to Dec, 2022. 
 Miguel Sanz is the head of the government of Navarre from Sep, 1996 to Jul, 2011. 
 Uxue Barkos is the head of the government of Navarre from Jul, 2015 to Aug, 2019. 
 Yolanda Barcina is the head of the government of Navarre from Jul, 2011 to Jul, 2015.

Answer:
Question:
Who was the head of Navarre in Apr, 2015?

Context:
 María Chivite is the head of the government of Navarre from Aug, 2019 to Dec, 2022. 
 Miguel Sanz is the head of the government of Navarre from Sep, 1996 to Jul, 2011. 
 Uxue Barkos is the head of the government of Navarre from Jul, 2015 to Aug, 2019. 
 Yolanda Barcina is the head of the government of Navarre from Jul, 2011 to Jul, 2015.

Answer:
user
Yolanda Barcina
assistant
Question:
Who was the head of Navarre in Apr, 2015?

Context:
 María Chivite is the head of the government of Navarre from Aug, 2019 to Dec, 2022. 
 Miguel Sanz is the head of the government of Navarre from Sep, 1996 to Jul, 2011. 
 Uxue Barkos is the head of the government of Navarre from Jul, 2015 to Aug, 2019. 
 Yolanda Barcina is the head of the government of Navarre from Jul, 2011 to Jul, 2015.

Answer:
user
Miguel Sanz
María Chivite
Uxue Barkos
assistant
Question:
Who was the head of Navarre in Apr, 2015?

Context:
 María Chivite is the head of the government of Navarre from Aug, 2019 to Dec, 2022. 
 Miguel Sanz is the head of the government of Navarre from Sep, 1996 to Jul, 2011. 
 Uxue Barkos is the head of the government of Navarre from Jul, 2015 to Aug, 2019. 
 Yolanda Barcina is the head of the government of Navarre from Jul, 2011 to Jul, 2015.

Answer:
user
Yolanda Barcina
assistant