Question:
Who was the head of Republic of Bashkortostan in May, 2013?

Context:
 Rustem Khamitov is the head of the government of Republic of Bashkortostan from Jul, 2010 to Nov, 2015. 
 Rustem Mardanov is the head of the government of Republic of Bashkortostan from Nov, 2015 to Dec, 2018. 
 Radiy Khabirov is the head of the government of Republic of Bashkortostan from Dec, 2018 to Sep, 2020. 
 Andrey Nazarov is the head of the government of Republic of Bashkortostan from Sep, 2020 to Dec, 2022.

Answer:
Question:
Who was the head of Republic of Bashkortostan in May, 2013?

Context:
 Rustem Khamitov is the head of the government of Republic of Bashkortostan from Jul, 2010 to Nov, 2015. 
 Rustem Mardanov is the head of the government of Republic of Bashkortostan from Nov, 2015 to Dec, 2018. 
 Radiy Khabirov is the head of the government of Republic of Bashkortostan from Dec, 2018 to Sep, 2020. 
 Andrey Nazarov is the head of the government of Republic of Bashkortostan from Sep, 2020 to Dec, 2022.

Answer:
user
Rustem Khamitov
assistant
Question:
Who was the head of Republic of Bashkortostan in May, 2013?

Context:
 Rustem Khamitov is the head of the government of Republic of Bashkortostan from Jul, 2010 to Nov, 2015. 
 Rustem Mardanov is the head of the government of Republic of Bashkortostan from Nov, 2015 to Dec, 2018. 
 Radiy Khabirov is the head of the government of Republic of Bashkortostan from Dec, 2018 to Sep, 2020. 
 Andrey Nazarov is the head of the government of Republic of Bashkortostan from Sep, 2020 to Dec, 2022.

Answer:
user
Andrey Nazarov
Rustem Mardanov
Radiy Khabirov
assistant
Question:
Who was the head of Republic of Bashkortostan in May, 2013?

Context:
 Rustem Khamitov is the head of the government of Republic of Bashkortostan from Jul, 2010 to Nov, 2015. 
 Rustem Mardanov is the head of the government of Republic of Bashkortostan from Nov, 2015 to Dec, 2018. 
 Radiy Khabirov is the head of the government of Republic of Bashkortostan from Dec, 2018 to Sep, 2020. 
 Andrey Nazarov is the head of the government of Republic of Bashkortostan from Sep, 2020 to Dec, 2022.

Answer:
user
Rustem Khamitov
assistant