Question:
Who was the head of Mykolaiv Oblast in May, 2011?

Context:
 Mykola Kruhlov is the head of the government of Mykolaiv Oblast from Mar, 2010 to Jan, 2014. 
 Oleksandr Stadnik is the head of the government of Mykolaiv Oblast from Sep, 2019 to Nov, 2020. 
 Oleksii Savchenko is the head of the government of Mykolaiv Oblast from Oct, 2016 to Jun, 2019. 
 Vadym Merikov is the head of the government of Mykolaiv Oblast from Jul, 2014 to Jun, 2016. 
 Vitaliy Kim is the head of the government of Mykolaiv Oblast from Nov, 2020 to Dec, 2022.

Answer:
Question:
Who was the head of Mykolaiv Oblast in May, 2011?

Context:
 Mykola Kruhlov is the head of the government of Mykolaiv Oblast from Mar, 2010 to Jan, 2014. 
 Oleksandr Stadnik is the head of the government of Mykolaiv Oblast from Sep, 2019 to Nov, 2020. 
 Oleksii Savchenko is the head of the government of Mykolaiv Oblast from Oct, 2016 to Jun, 2019. 
 Vadym Merikov is the head of the government of Mykolaiv Oblast from Jul, 2014 to Jun, 2016. 
 Vitaliy Kim is the head of the government of Mykolaiv Oblast from Nov, 2020 to Dec, 2022.

Answer:
user
Mykola Kruhlov
assistant
Question:
Who was the head of Mykolaiv Oblast in May, 2011?

Context:
 Mykola Kruhlov is the head of the government of Mykolaiv Oblast from Mar, 2010 to Jan, 2014. 
 Oleksandr Stadnik is the head of the government of Mykolaiv Oblast from Sep, 2019 to Nov, 2020. 
 Oleksii Savchenko is the head of the government of Mykolaiv Oblast from Oct, 2016 to Jun, 2019. 
 Vadym Merikov is the head of the government of Mykolaiv Oblast from Jul, 2014 to Jun, 2016. 
 Vitaliy Kim is the head of the government of Mykolaiv Oblast from Nov, 2020 to Dec, 2022.

Answer:
user
Oleksandr Stadnik
Vitaliy Kim
Vadym Merikov
Oleksii Savchenko
assistant
Question:
Who was the head of Mykolaiv Oblast in May, 2011?

Context:
 Mykola Kruhlov is the head of the government of Mykolaiv Oblast from Mar, 2010 to Jan, 2014. 
 Oleksandr Stadnik is the head of the government of Mykolaiv Oblast from Sep, 2019 to Nov, 2020. 
 Oleksii Savchenko is the head of the government of Mykolaiv Oblast from Oct, 2016 to Jun, 2019. 
 Vadym Merikov is the head of the government of Mykolaiv Oblast from Jul, 2014 to Jun, 2016. 
 Vitaliy Kim is the head of the government of Mykolaiv Oblast from Nov, 2020 to Dec, 2022.

Answer:
user
Mykola Kruhlov
assistant