Question:
Who was the head of Moldova in Dec, 2015?

Context:
 Natalia Gherman is the head of the government of Moldova from Jun, 2015 to Jul, 2015. 
 Vlad Filat is the head of the government of Moldova from Sep, 2009 to Mar, 2013. 
 Valeriu Streleț is the head of the government of Moldova from Jul, 2015 to Oct, 2015. 
 Gheorghe Brega is the head of the government of Moldova from Oct, 2015 to Jan, 2016. 
 Chiril Gaburici is the head of the government of Moldova from Feb, 2015 to Jun, 2015. 
 Maia Sandu is the head of the government of Moldova from Jun, 2019 to Nov, 2019. 
 Pavel Filip is the head of the government of Moldova from Jan, 2016 to Jun, 2019. 
 Iurie Leancă is the head of the government of Moldova from May, 2013 to Feb, 2015. 
 Aureliu Ciocoi is the head of the government of Moldova from Dec, 2020 to Aug, 2021. 
 Ion Chicu is the head of the government of Moldova from Nov, 2019 to Dec, 2020. 
 Natalia Gavrilița is the head of the government of Moldova from Aug, 2021 to Dec, 2022.

Answer:
Question:
Who was the head of Moldova in Dec, 2015?

Context:
 Natalia Gherman is the head of the government of Moldova from Jun, 2015 to Jul, 2015. 
 Vlad Filat is the head of the government of Moldova from Sep, 2009 to Mar, 2013. 
 Valeriu Streleț is the head of the government of Moldova from Jul, 2015 to Oct, 2015. 
 Gheorghe Brega is the head of the government of Moldova from Oct, 2015 to Jan, 2016. 
 Chiril Gaburici is the head of the government of Moldova from Feb, 2015 to Jun, 2015. 
 Maia Sandu is the head of the government of Moldova from Jun, 2019 to Nov, 2019. 
 Pavel Filip is the head of the government of Moldova from Jan, 2016 to Jun, 2019. 
 Iurie Leancă is the head of the government of Moldova from May, 2013 to Feb, 2015. 
 Aureliu Ciocoi is the head of the government of Moldova from Dec, 2020 to Aug, 2021. 
 Ion Chicu is the head of the government of Moldova from Nov, 2019 to Dec, 2020. 
 Natalia Gavrilița is the head of the government of Moldova from Aug, 2021 to Dec, 2022.

Answer:
user
Gheorghe Brega
assistant
Question:
Who was the head of Moldova in Dec, 2015?

Context:
 Natalia Gherman is the head of the government of Moldova from Jun, 2015 to Jul, 2015. 
 Vlad Filat is the head of the government of Moldova from Sep, 2009 to Mar, 2013. 
 Valeriu Streleț is the head of the government of Moldova from Jul, 2015 to Oct, 2015. 
 Gheorghe Brega is the head of the government of Moldova from Oct, 2015 to Jan, 2016. 
 Chiril Gaburici is the head of the government of Moldova from Feb, 2015 to Jun, 2015. 
 Maia Sandu is the head of the government of Moldova from Jun, 2019 to Nov, 2019. 
 Pavel Filip is the head of the government of Moldova from Jan, 2016 to Jun, 2019. 
 Iurie Leancă is the head of the government of Moldova from May, 2013 to Feb, 2015. 
 Aureliu Ciocoi is the head of the government of Moldova from Dec, 2020 to Aug, 2021. 
 Ion Chicu is the head of the government of Moldova from Nov, 2019 to Dec, 2020. 
 Natalia Gavrilița is the head of the government of Moldova from Aug, 2021 to Dec, 2022.

Answer:
user
Maia Sandu
Ion Chicu
Natalia Gavrilița
Pavel Filip
Valeriu Streleț
Natalia Gherman
Aureliu Ciocoi
Vlad Filat
Iurie Leancă
Chiril Gaburici
assistant
Question:
Who was the head of Moldova in Dec, 2015?

Context:
 Natalia Gherman is the head of the government of Moldova from Jun, 2015 to Jul, 2015. 
 Vlad Filat is the head of the government of Moldova from Sep, 2009 to Mar, 2013. 
 Valeriu Streleț is the head of the government of Moldova from Jul, 2015 to Oct, 2015. 
 Gheorghe Brega is the head of the government of Moldova from Oct, 2015 to Jan, 2016. 
 Chiril Gaburici is the head of the government of Moldova from Feb, 2015 to Jun, 2015. 
 Maia Sandu is the head of the government of Moldova from Jun, 2019 to Nov, 2019. 
 Pavel Filip is the head of the government of Moldova from Jan, 2016 to Jun, 2019. 
 Iurie Leancă is the head of the government of Moldova from May, 2013 to Feb, 2015. 
 Aureliu Ciocoi is the head of the government of Moldova from Dec, 2020 to Aug, 2021. 
 Ion Chicu is the head of the government of Moldova from Nov, 2019 to Dec, 2020. 
 Natalia Gavrilița is the head of the government of Moldova from Aug, 2021 to Dec, 2022.

Answer:
user
Gheorghe Brega
assistant